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07-12-2017, 11:45 AM | #1 |
Registered User
Join Date: May 2013
Location: thunder bay
Posts: 46
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First time ls/vortec swapaper, please point out the obvious for me :)
I have a mickey mouse standalone harness that I had made by some dude on ebay out of my stock 99 gmc harness that I harvested my 4.8 out of.
The guy offers ZERO tech support and no instructions so I have a few questions, I'll post them one at a time and address each issue and resolve it before tackling the next. I have an aftermarket 21 circuit wiring harness in my 55 gmc. This harness has an alternator exciter wire and an alternator power wire. The standalone harness has a single wire that plugs into the alt. Is that the exciter wire? Do I need the exciter wire from the 21 circuit harness or do the pcm control that. The alternator is the stock unit from the 4.8 truck engine. Thnx ☺ |
08-04-2017, 11:30 PM | #2 |
Registered User
Join Date: Oct 2016
Location: Seneca, KS
Posts: 12
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Re: First time ls/vortec swapaper, please point out the obvious for me :)
You do not need excitation wire for newer alternators. Yours should be internally regulated. Review the information at
http://lt1swap.com/underhoodfuseblock.htm There is a lot of detailed information here. If you're still unsure, ask away! |
08-06-2017, 06:28 AM | #3 |
Post Whore
Join Date: May 2015
Location: Alabama
Posts: 14,557
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Re: First time ls/vortec swapaper, please point out the obvious for me :)
also posting your ls questions in the ls forum may get you more reponces...but I agree..no exciter wire needed
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