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Discussion Starter #1
I need some help with my wiring setup. While sitting at a light at night with the lights on and the electric fan running my volts drop down to 12 if not lower. Know I have replaced the battery, voltge regulator and the alternator with a new 100 amp one. And the volts still drop. The way I have it wired is like this: One wire (10 or 12 guage) from the pos. battery across the radiator support to the junction connection by the voltage regulator. Fom there one wire goes to the fuse box and one wire goes to the alternator. I have my fan and MSD box running off the positive side of the battery. So I have 3 wires coming off the positive battery terminal. This I would like to fix as well. Can I run a wire straight from the battery to the alternator? And leave the one going to the junction connection as well. I assume I should be using an 8 gauge wire to the alternator, but the wire going to the junction connection is smaller then 8 gauge, like 10 or 12. I hope this isn't confusing. I want a clean show quality look but I don't want 4 wires on the positive terminal. Any suggestion or pics would be awesome. Tell me the clean way to properly wire all this. Thanks.
 

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If the alternator is considered a 1-wire alt. Then, yes you can run a wire from the alt. to the battery.You won't need the wire going from the alt. to the junction block anymore.The actual alternater is a different story.What brand is it?Some of the 100amp alts. are nothing more than a stock alternater that kicks out a 100amps at 4500rpm. Which of course if a stock alt. wasn't doing the trick at idle neither will this one.I have a 100amp Powermaster. It came with specs from a load test. It kicks out 63amps at 1200rpm, which is more then enough to power all my extra goodies.
 

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It is the Jegs chrome version. I think they are made by a company called Tuff Stuff. It says it is rated at 100 amps. I am wondering if my problem is to small of a wire going to the alternator?
 

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I ran 6ga. wire from my alt to my battery; 8ga probably would have worked just fine but I already had the larger wire.The wire that you have is most likely 10ga. If it's the original wire it could have gotten a little corroded which creates resistance. Replacing the wire definantly won't hurt.I checked out your alt in Jegs.I'm not trying to be a turd but I think that alt is like what I described in my last post.Basically stock amperage at idle and the 100amps kicks in at a high rpm.I had bought a Summit brand 100amp alt and that's how it worked until I got the Powermaster,then everything worked great at idle speeds.I could be completely wrong about your alt, but I,m just trying to give a heads up.Good luck
 
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