I have a chance to get a 1/2 ton 55-59 wiring harness for dirt cheap. however, it's for a generator and I have an alternator. anyone know if I can easily modify this? to do it perfect I'd probably get a seperate alternator conversion harness, I'd still be well below half the cost of buying a harness the regular way.
To wire in an alternator without a special harness,connect the A wire at the generator end to your alternator output, at the point in the loom where the generator regulator would have gone, connect the A wire to the B wire and insulate the joint. That'll do it if you have a single wire alternator on your truck.
If you have a three wire alternator, connect the A wire as above, loop the S connection to the alternator output terminal, and connect the alternator F connection to the generator F wire, then connect and insulate a new wire to the F connection at the regulator end, and connect this new wire to the output side of the ignition switch.
This might sound complicated but it's easier to do this job than describe it!
Stuart.
