Wiring Help Upgrading to 1 wire Alt

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Joined
Jul 6, 2015
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Location
Iowa
My Car
1973 Mustang Grande 351C 2v
OK. I am not good at reading and understanding wire diagrams. The pic below is of the wiring instructions. I need help identifying which wire in the car is the power supply to fuse box from under the hood. Thanks in advance.


wiring.jpg
 
Yep, you won't want to run a wire all the way to the fuse block. You have 2 sources to use for your B+ the wire Hemi killer mentioned or the junction block that your original alternator harness went to. It's big black wire w/a orange stripe. Mine was on a 73. As far as the the rest, there's still the source voltage whether or not you have the gauges or not. One follows through the ammeter the other had a idiot light.
 
Last edited:
That seems to be related to a Painless wiring harness, I have never seen a split/loop like that…
 

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