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post #1 of (permalink) Old 08-10-2004, 11:50 AM Thread Starter
 
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Alternator / Wiring Question

Well, it happened..for the first time the CJ left me walking...OK, I'm too fat to walk, I just called a friend, but either way you get the point...

I was going into town late, obviously using the headlights, and when I had made it almost to town (30 miles) she started running really bad, so I turned off the headlights to see if that would clear it up and it did. Now, I've had the alternator and battery both tested. Both good. I have a good wiring diagram, but the PO obviously did a little handy work on the alternator wiring. here's what I did, and I was looking for suggestions on if it was right / safe...

In circle 1, the batter cable, I jumped a wire from the alternator directly to the battery cable. Circle 2 is just the other end of the jumper wire. Circle 3 is where it hooks to the alternator.

I tried to trace the wire in yellow to make it easy to see what's going on.

I knew this would get it running to get me home, but I don't know what the long term effect is...Correct me if I'm wrong...Doing that will cause the motor to run off the battery instead of going to the starter solinoid causing it to run off the alternator? Right? Wrong? You're not going to hurt my feelings...you can tell me I'm an idiot...

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post #2 of (permalink) Old 08-10-2004, 01:12 PM
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Re: Alternator / Wiring Question

I have mine hooked up similarly. I have a dual post battery. I used the side posts to connect to the engine block and starter solenoid. I put marine terminals on the top posts. I used a solenoid to starter cable to connect from each of the marine posts to the alternator - one to the batt terminal and one to the case.
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post #3 of (permalink) Old 08-10-2004, 02:30 PM Thread Starter
 
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Re: Alternator / Wiring Question

Thanks...sounds like I should be OK...doesn't that cause the engine to run off the battery instead of the alternator though?
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post #4 of (permalink) Old 08-10-2004, 03:16 PM
 
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Re: Alternator / Wiring Question

That's just fine. The lug on the starter solenoid is just used as a connection point for the battery and alternator. Running it straight to the battery is fine. Someone might suggest a fusable link though. You can connect the (red) sense wire on the alternator plug to the battery as well to make sure it has a good connection. The dark wire is for the excitor, and either goes thru a resistance wire or idiot light back to positive as well, but thru the ignition switch.
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