Alternator Hook up

Red944ls1 Mon Jul 10, 2017 11:49 pm

Hi all...I have looked at a few post and still am a little confused.

I have a Silverado alternator with a two wire hookup with a harness connect done by SSP.

I understood that I simply connect the two pin weatherstripping connector and then the blue wire from the original Porsche connection and I would be fine. The battery is not charging with this hookup. The voltage inside on the dash is reading but again not charging. Do I need to hook 12v to the back of the alternator to the battery as well?

Thx

sharkey Tue Jul 11, 2017 12:28 am

the blue wire is hooked to the field circuit of the alternator, this is what essentially turns the alternator on. you also need a battery cable hooked from the back of the alternator to the battery, this is the output from the alternator to charge the battery. this should be an 8 gauge wire or larger.

Red944ls1 Tue Jul 11, 2017 12:47 am

Thanks for your quick response. Currently I have the blue wire to the back of the alternator and the plug from the harness attached to the alternator. If the 8gauge wire is to go to the back where to I hook up the blue wire...not to sound ridiculous :-)

sharkey Tue Jul 11, 2017 1:19 am

im not sure what alternator you have exactly, but here is a general diagram that should point you in the right direction

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with a 2 pin you should have the L and S on it, wire them up as shown. S goes to the alternator stud, L will go to the blue wire in the car. you then run an 8 gauge wire from the stud on the alternator to the battery

Red944ls1 Tue Jul 11, 2017 4:24 pm

Thanks for the drawing. My two wire connector connects the two in the middle and the wires are red and brown whereas the drawing connect the second and 4th. Any ideas..

spence Tue Jul 11, 2017 5:29 pm

follow the drawing and you should be fine

Rich L. Thu Jul 13, 2017 9:55 pm

Here's the setup I used with my Camaro alternator and the pigtail from Painless.

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Red944ls1 Sun Jul 16, 2017 9:04 am

Thanks for the replies. The alternator is up and running. I rant the 8 gauge wire from the back of the alternator to the battery. I connected the blue wire to the L wire by splice and then connected the pigtail from the harness the alternator.

It is charging now.

Alternator Hook up

Alternator Hook up

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