1978 One Wire Alternator Install

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Feb 10, 2013 | 10:29 PM

Chevmn56

Thread Starter

Tuned

Joined: Dec 2012

Posts: 345

Likes: 2

1978 One Wire Alternator Install

Hello Guys. I'm sure this has been talked to death.......but here goes, I'm cleaning up the engine bay harnesses. I am trying to figure out the one wire install before I retape the harnesses. Reading the prints and tra ing wires has not shed light on two things. One being the idiot light, I would like to keep it it looks as though it may have something to do with the Y/B wire but I'm not sure.
The other is the ammeter gauge. Has anyone utilized the existing harness for these functions??? If so I would sure love some detailed directions.

A lot of the older posts deal with older trucks and are confusing!!!

Any help would be appreciated

Feb 10, 2013 | 11:21 PM

HIO Silver

Fleet Owner

Joined: Dec 2009

Posts: 20,678

Likes: 82

From: NorCal

PA Performance offers a voltage regulator that allows ya to maintain a functioning ammeter: https://www.ford-trucks.com/forums/9...l#post12678807

Dunno about idiots lights. Gauges are the way to go.

Feb 12, 2013 | 02:47 PM

fasthauler

Fleet Mechanic

Joined: Mar 2004

Posts: 1,398

Likes: 17

From: Hesperia, CA

This is what I did to mine. It was a major mod. I pulled about half the wire out of the truck. Forget the ampmeter they are worthless. Get yourself a voltmeter. I hope this helps.

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