Wiring issues please help - JeepForum.com
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post #1 of 5 Old 09-22-2017, 08:33 PM Thread Starter
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Wiring issues please help

Ok let's start with the basics I've got a 83 cj7 with a brand new 258 auto trans not sure what it is exactly but that's for another day I've got 11 inches of lift total sitting on 35s the thing is a beast during the day I just got it about 3 weeks ago at night I turn the headlights on and the volt meter goes crazy and the lights go dim until I get on the gas then they are bright again I thought it was the alternator so I ordered one 100 amp job thinking that should fix it input it in this afternoon and now the lights stay dim constantly and I mean way too dim to be able to drive with I'd be better off mounting a mag light to the hood can anyone help what should I do next

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post #2 of 5 Old 09-23-2017, 08:44 AM
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1981 CJ5 
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And this:

And make sure your headlights have a good ground.
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post #3 of 5 Old 09-23-2017, 01:16 PM Thread Starter
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Thanks I think I need new headlights too the wiring on this thing is original so I think new everything is in order to be able to run it the way I want to as a somewhat daily driver and weekend toy
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post #4 of 5 Old 09-23-2017, 02:39 PM
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1976 CJ7 
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I think I would verify that the charging system is OK before I bothered screwing with the lights. You said it got bright when you brought the RPM's up, but didn't after you swapped in the new alternator, that tells me you have charging issues. That relay system is a very good idea, but not until you know you have juice.
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post #5 of 5 Old 09-23-2017, 11:20 PM Thread Starter
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I don't know much at all about wiring a vehicle and hate to sound stupid but with the new alternator (it only reads 11 volts until the lights are on then drops to 5 with the lights on the old one would stay at 17 while pushing the gas then bounce all over the place with the lights on) where do I check from here without rewinding everything and doing the new headlights I wanna go with a dual battery setup to run my winch and on board air but neither of those are installed right now cause If I don't have the power to run lights I sure do t have enough for either of them any ideas on where to check and how to do it would be greatly appreciated
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