1988 spl wiring questions.

juancgar

Cadet
Joined
Feb 17, 2011
Messages
12
Hello all,

​First, I would like to say thanks for all the great posts on here. have really learned allot from you guys. But i've got an issue that I haven't found a remedy for yet and am about to loose my marbles..... I've got this wiring issue with my 1988 88spl. The manual states regulator/rectifier but model number is J88mslccc which calls for rectifier. There are a couple items that have caught my attention but am not sure of what to do.
#1. Purple lead on my outboard is unattached to anything coming off the rectifier. Just as shown on image.
Q: After following the purple lead into the connector, turns out its supposed to connect to the battery positive. How? if its unattached to anything?
#2. Red lead off the rectifier is attached to the red/purple on strip, not the red and are not linked near rectifier.
I did find that with red/pu is linked to the red at the starter solenoid.
Q: Should I connect it as shown on the image? Or leave it as is. It just doesn?t look right. Plus, if this lead is the charging output lead to battery, wouldn?t the inline fuse on the red/pu lead limit the charge input to the battery? Which would be a good reason for my batter not charging. which is the case.
#3. Common blk and yel/red on starter solenoid are reversed on my outboard.
Q: Would this affect the performance of the engine? I?ve noticed that other model outboard wiring diagrams show to wire it same as mine so am confused of importance of these wires being crossed or not.
#4: Battery doesn?t charge. I?ve got some troubleshooting to do yet, so will let you know what steps and finding on this issue. I know it could be a number of things such as bad stator, rectifier, wiring, ec.t. But am convinced it?s the wiring issue from question #2.

Inked1988_V4 diagram_LI.jpg

​The outboard does run in its current configuration, just cant use any accessories to not drain the battery. when I do, then I use the kicker motor to get home but its pretty slow going and tells me there are wiring issues. which is why I'm here. lol.
​Any advise would be great.

Thanks

​~Juan



 

wrench 3

Commander
Joined
Aug 12, 2012
Messages
2,108
Question #1
The purple wire isn't battery. It's accessory, or if you didn't have a magneto ignition it would be referred to as ignition. Your charging system doesn't need it.
#2
I've gone through a couple of different wiring diagrams and can't find one that has the red charging system wire going through the fuse. However if the fuse is in good shape it should still charge.
#3
The two shall terminals on your starter solenoid are interchangeable. It doesn't matter if they are reversed.
#4
What accessories are you running? Your engine only has a 6 amp charging system to replace what the starter uses. In comparison the average 1960s automobile had a 40 amp charging system.
 

clanton

Rear Admiral
Joined
Jul 9, 2001
Messages
4,876
The purple wire is powered up from the ignition switch. The purple wire feeds the gauges and regulator. Blown fuse cuts all power to ignition switch, except T&T on the diagram you are using. The red wire from the regulator not connected to anything on strip, should be connected to red wire going to starter solenoid.
 

juancgar

Cadet
Joined
Feb 17, 2011
Messages
12
Thanks for the info guys. I appreciate the help. This clarifies several things and am kind of relieved.

Wrench 3, As for the accessories, I'm just running the basics ie. nav lights, fish finder, 2 bilges all on independent switches on console and have never needed to run all at the same time. Ive also got a trolling motor but on a dedicated/isolated battery.

Clanton, I was thinking about switching the red wire as the diagram suggests but was waiting for suggestions. Just in case it might have been placed intentionally for some odd reason.

​Update on this post;
​​I ran several ohms readings on the power coils, spark plug cables and the rectifier, they all failed according to mfg. specs so will be replacing them soon.
​Strangest thing though; they were all pretty uniform in inconsistencies so am kind of skeptical because it does run strong. just no battery charge. which may be because of that red wire from rectifier.

​will continue troubleshooting and update once I finally get it back on boat and tested.

thanks again guys

​~Juan ​

 
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