SKU: 17100294754

Switch Box / Power Pack – Fits Mercury & Force 3 & 6 Cyl 50-275 HP (Replaces 332-7778A12, 332-7778A9, 332-7778A6)

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Description

Switch Box / Power Pack – Fits Mercury & Force 3 & 6 Cyl 50-275 HP (Replaces 332-7778A12, 332-7778A9, 332-7778A6)Switch Box Power Pack Fits Mercury & Force 3 & 6 Cyl 50 275 HP (Replaces 332 7778A12, 332 7778A9, 332 7778A6) This switch box power pack is a direct replacement for 3 & 6 cylinder Mercury and Force outboards from 50 to 275 HP, specifically designed for models using an Alternator Discharge Ignition (ADI) system. It ensures reliable spark timing and engine performance, restoring your outboard's ignition system to factory standards. This unit directly

Switch Box / Power Pack – Fits Mercury & Force 3 & 6 Cyl 50-275 HP (Replaces 332-7778A12, 332-7778A9, 332-7778A6)

This switch box power pack is a direct replacement for 3 & 6 cylinder Mercury and Force outboards from 50 to 275 HP, specifically designed for models using an Alternator Discharge Ignition (ADI) system. It ensures reliable spark timing and engine performance, restoring your outboard's ignition system to factory standards.

This unit directly replaces multiple OEM and aftermarket part numbers, offering a versatile solution for a wide range of engine models primarily from the 1980s through the 2000s.

  • Installation: Direct bolt-on replacement with color-matched wiring.
  • Construction: Fully potted, epoxy-sealed unit for marine-grade durability and protection against moisture and vibration.
  • Function: Restores spark and ignition timing for ADI systems.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands. Ensure your existing part number is listed below for guaranteed compatibility.

Brand Part Number
Sierra 18-5775
CDI Electronics 114-7778
Mercury 332-7778A12
Mercury 332-7778A9
Mercury 332-7778A6
Mercury 332-7778A3
Mercury 332-7778A1
Mercury 332-7778A7
Mercury 332-5524A1
Force F749301
Force F7778A9
Mallory Marine 9-25100

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Brand Model (HP) Beginning Serial No. Ending Serial No. OEM Part No. Notes
Mercury/Force 50/60 (3 cyl) 6428681 D000749 332-7778A12
Mercury/Force 65/70 4382057 & UP 332-7778A12
Mercury/Force 70/75 (3 cyl) C272000 D283221 332-7778A12
Mercury/Force 80 (3 cyl) A996142 C221999 332-7778A12
Mercury/Force 90 (6 cyl) 5299506 & UP 332-7778A12
Mercury/Force 90 (3 cyl) A996142 D283221 332-7778A12
Mercury/Force 90 (Sport Jet Powerhead) E023150 E095087 332-7778A12
Mercury/Force 105 (Jet) D082000 G303045 332-7778A12
Mercury/Force 115 (6 cyl) 5314656 & UP 332-7778A12
Mercury/Force V-135 A904646 & UP 332-7778A12
Mercury/Force 140 5327663 & UP 332-7778A12
Mercury/Force 140 (Jet) D082000 G960499 332-7778A12
Mercury/Force V-150 4868998 G960499 332-7778A12
Mercury/Force V-150 XR2 6616991 A904645 332-7778A12
Mercury/Force XR4, Magnum II B242885 D819999 332-7778A12
Mercury/Force V-150 XR6 D820000 G960499 332-7778A12
Mercury/Force V-175, EFI, XR1 4301235 G960499 332-7778A12
Mercury/Force V-200, XR1 4839034 G960499 332-7778A12
Mercury/Force V-220 B117316 & UP 332-7778A12
Mercury/Force V-225 5628028 & UP 332-7778A12

Technical Specifications

Specification Value
Product Type Switch Box / CDI Power Pack
Installation Direct bolt-on replacement
Application ADI Ignition System
Compatibility 3 & 6 cylinder Mercury/Force outboards
Engine Range 50-275 HP
Channels Multiple (supports 3 & 6 cylinder engines)
Housing Material Epoxy-sealed unit
Weight 1.02 lbs (0.46 kg)
Mounting Direct OEM location
Wiring Color-matched to OEM specifications
Other Technical Attributes Enhanced spark efficiency, marine-grade durability

Package Contents

This package includes:

  • 1 x Switch Box CDI Power Pack (Replaces OEM P/N 332-7778A12)

Installation Guide

Professional installation is recommended. The general steps are as follows:

  1. Disconnect Power: Completely disconnect the battery terminals to prevent electrical shorts.
  2. Locate the Old Unit: Find the existing switch box on your engine. It's typically a black, sealed box with multiple wires.
  3. Disconnect Wiring: Carefully unplug all wire harness connectors from the old switch box. Note their positions if they aren't color-coded.
  4. Remove Old Switch Box: Unbolt the old unit from its mounting location.
  5. Mount New Switch Box: Secure the new switch box in the same location using the original hardware.
  6. Connect Wiring: Plug the wiring harnesses into the new switch box, ensuring the color-matched wires align correctly.
  7. Reconnect Battery: Reattach the battery terminals, starting with the positive lead.
  8. Test Operation: Start the engine and verify it runs smoothly. Check for consistent spark on all cylinders if issues persist.

Troubleshooting & FAQ

Q: How do I confirm this switch box will fit my Mercury engine?

A: This switch box fits a wide range of 3 & 6 cylinder Mercury and Force outboards (50-275 HP) that use an ADI (Alternator Discharge Ignition) system. The most reliable way to confirm compatibility is to match the part number from your old switch box to one of the numbers listed in our Part Number Cross-Reference table (e.g., 332-7778A12, 18-5775, 114-7778). You can also use the serial number ranges in the Compatible Engine Models table to check your specific model.

Q: What are common signs that my original switch box is failing?

A: Symptoms of a faulty switch box include: no spark on one or more cylinders, intermittent or weak spark, engine misfiring (especially at high RPM), backfiring, or a complete failure of the engine to start.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 17100294754

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4.7 ★★★★★
Based on 30 reviews
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Billy Six
Draper, US
★★★★★ 3
Not indestructible but pretty darn tuff for sure!
Size: Large, Color: Blue
I would have maybe given a better rating if they hadn’t lied about it being indestructible and recommended it for my dogs size range! It didn’t last the first day. However my dog may be a bit above average when it comes to his relationship with the balls! It’s an issue and he should probably be in a 12 step program of some kind. But we all have our vices right and his is balls. All of them he needs em and he never stops joining for them and the stronger they are the more he’s driven to defeat it! So now that you have full disclosure from me. The ball is still in his box and it’s still round and mostly intact and that’s after several months! The part that didn’t last the first day was the squeaker! Poor little dude! If he would have just stayed quite it. But he didn’t and Bo dog knew he was in there! And made short work of him. Other than that. The ball pretty dang tough! But it’s not indestructible is it a big deal. Well in this world of way to many choices and then having to find the few that will tell you honestly what your getting and are not over stating their product! Just to get your money. And couldn’t care less about the quality! It sucks that we have to navigate all the crap to find the few decent things available. So it most certainly does matter! And I say that for their benefit the most hopefully! Because people are craving and constantly looking for a company that just makes the effort to put out the best they can. And tell you the honest description of what they have. That stands behind their work and puts more effort into quality then they do into profit. With the faith that the quality and integrity in their company will end up bring them the profits they can be proud of and know that they earned! Honestly! Is this company one of those! I don’t know? It’s not clear and in their defense I never reported the sneaky man’s demise on day one! I expected that. But indestructible is a descriptive word that has a very specific meaning. And when it’s used in a manner that it was! Then you’ve set yourself up to fail as there are very few things that meet that description! And I know I’m picking hairs here. But it’s words that get used like that wich makes one appear to have not met the standard they wanted to! And maybe you don’t realize its impact on your overall until it’s far down the road! Can it be said better. Sure . Always room for improvement. But I would certainly remove the claim that’s just unreasonable to expect. If I wanted to use the benifit the does have to offer perhaps I would have said this ball is the closest thing to indestructible we’ve made so far. That’s statement tell me that they are not claiming it is but that it’s pretty tough! And it with out exact words tells you these guys must take honesty seriously or they wouldn’t have chosen to claim the accurate step below. And that lets me know that they hold themselves to a standard that they obviously respect their customers and they don’t take them for granted that’s integrity right there and there’s just not enough of it o. This world today! Seems to me that there are a few that are really close to it though. Maybe so close it’s worth the time to just go ahead and say it. If my gut feeling is right then it’s absolutely worth the time! Do I recommend the item absolutely it’s as tough as nails! And if you hate the squeaky part. Then don’t worry it won’t last long if your dogs like mine. Or you can take the little dude out when the dogs sleeping! And I’m going to add a star because when I look at it in the wider view I’ve been a bit harder then is justified I believe. Their. Our lives today are not as good as they once were and should be! Because of our bad habit of not holding ourselves to the standards we are capable of and rather settling for what’s out there at the time. Because of many reasons right. What’s the point. Or it’s not going to change a thing. Or that as good as it needs to be. Don’t want to seem so picky and all the justification we inject in the place of our potential. That’s had a vey negative effect across the board! And we’re losing so much more then quality dog toys as a result. When we let or standards drop due to whatever reasons as a civilization then are standards drop. And that’s all you should need to know. To understand where that leads! And we only do ourselves the disservice and loss that comes from those choices. So look around and don’t hesitate to. All out that when you see it. Just try and come from a place that’s not to tear things down but to remind them of what they are really capable of! And how much we all need to hold ourselves to the highest standard we are capable of! And stop justifying excepting less! And then we see the results from that rather than the other.
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Reviewed in the United States on August 18, 2025
A
Verified Purchase
Amber McIntosh
Pawtucket, US
★★★★★ 5
MUST BUY! For large Dogs Safe & Fun! 100lb Dutch shepherd loves this
Size: Large, Color: Blue, Size: Large, Color: Blue
I have 100 pound Dutch Shepherd who likes to chew and he goes through toys pretty quickly. This one he has been chewing on for hours and has not made a dent, not one!! he loves it. He bounces it. It’s very bouncy. I love that about it the engagement with it is great! noise level. It makes some noise. I’ve got wood floors so you can hear it bouncing and the squeak is pretty loud, which is fine with me. It doesn’t bother me. My pet really really enjoys this a lot. I think this is an amazing value for the money because I’ve spent more money on other toys and they fell apart within a day. I think it’s a safe toy because he’s not got a little hard plastic pieces that are coming off of it. It does not break apart very easily and the size is good. it fits in the palm of my hand so it’s pretty good size ball for him. It’s big enough. He cannot swallow it, but he can fit it in his mouth. I think the thing that I like the most about it and he enjoys is that when he drops it, it bounces and he can chase it. Pet enjoyment 10 out of 10 engagement 10 out of 10. I feel it’s very safe dog friendly absolutely must buy hands-down. You will not be disappointed. It’s made of a very strong. I would say rubber and it’s super easy to clean. Just toss it in the sink. Wash it off with soap and water rinse it. It’s good to go. I’m running to buy another one right now as we speak so just in case he loses it, he’ll have a backup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
E
Verified Purchase
Elysa S.
Pawtucket, US
★★★★★ 5
Great, solid toy safe for my dog
Size: Large, Color: Blue, Size: Large, Color: Blue
This ball is great! My pit bull love toys, especially ones with squeakers, but she’s a power chewer and trashes them almost immediately. Since she’s got a history of swallowing foreign bodies, this means she’s rarely been able to have toys, and when she does get them, it’s short lived. She LOVES this ball and it’s already lasted multiple weeks with no signs of any damage, despite the fact she carries it everywhere and chews on it daily. We don’t have to worry about her safety with this toy, because it’s large and tough enough she can’t swallow anything. It hasn’t lost its squeak either despite all her tough love. She loves to play with it and we’re getting more of them asap so she has a backup if this one gets lost or eventually does break.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
L
Verified Purchase
Luna Cherry
Louisville, US
★★★★★ 5
Truly indestructible
Size: Large, Color: Blue
They are not kidding, this ball is truly indestructible. I've gotten several for my dogs so they have plenty to share. Two of my dogs are beyond super chewers (bully breeds). One of the balls is missing the section that's glued into most of them, but the structure has still held up. And my dogs LOVE them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
G
Verified Purchase
Gimmedap
Phoenix, US
★★★★★ 4
Tough STINKY ball
Size: Large, Color: Red
This ball is the only one I've found that my dog can not destroy in seconds. He can chew on it for a few weeks before he works a hole in it. That's the good part. The bad side is the horrible smell! It doesn't seem to bother him, but it is horrible to my nose. It is so awful that I tried soaking it and dish soap and vinegar water overnight to see if I could make it go away. It was a little bit better but still stunk. Anybody got other suggestions on what could make the smell go away?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026

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