[65buggy]

I have a 1965 mustang with a 289 engine. I am replacing the alternator and harness. I have the gauges so I bought the harness that has three wires in the disconnect, the one in the middle is a big black wire with a yellow stripe. The harness from the regulator to the end of the plug --is already on the car-is white with a black stripe. Would a new underhood harness work with this alternator? I have a big black wire with yellow stripe coming from the starter relay and was connected to the old alternator. I need to know how to wir this correctly. Thanks for any help.

[jim293]

Welcome lets try your question in here.

[65buggy]

i'm confused. alternator wiring harness from regulator to alternator plug --must be for the lights--I have the alternator harness for the gauges. The wires don't match. Do I need the pigtail for the lights? I recently got the car and the battery would'nt stay charged. Battery tested good-but ahh-alternator was bad. the ground wires were fused togeher -and insulattion was burnt.Don't know if it was hooked up right.

[Veronica]

Hello.
This might help.
The Care and Feeding of Ponies: Alternator and charging system

[65buggy]

Originally Posted by Veronica

Hello.
This might help.
The Care and Feeding of Ponies: Alternator and charging system

Great site: I have it hooked up correct except there is a yellow wire from the Batt terminal on the alternator through the firewall. Have not traced it yet. I think it goes to the ignition. I have the wiring harness for the lamps but have gauges now. Want to make sure so I don't burn up the alternator. when I unpluged the harness the ground wires were burnt.I don't know what caused this.

[Veronica]

Hi again. The yellow wire going through the firewall from the bat post on the alternator was probably for some sort of aftermarket gauge. It should be a black wire with a yellow stripe coming off of the bat post on the alternator that goes up to the hot side of the starter solenoid.