Alternator wiring...please help

[jerry73]

My problem is my alternator works but isn't charging the battery and I don't thing it is wired correctly due to the PO swapping the diesel. For a 454....does anyone have an alternator wiring diagram or clear pictures that show how it is hooked up? Anything will help this is my daily driver so I need to fix it...thanks in advance
Posted via Mobile Device

[gchemist]

What year is the truck? What type of alternator? You can find wiring diagrams on www.autozone.com under their maintenance section. You have to sign up for their website.

[chengny]

Engine compartment wiring for 1978 with diesel;

That isn't very helpful is it -try this:

[jerry73]

I can sorta make out what it says but I just can't tell where the wires go...is there a more clear one? Thanks,jerry
Posted via Mobile Device

[chengny]

Click on the image and it gets bigger (and more legible). When it enlarges, right click and download. You should be able to see it pretty good.

[chengny]

Here the engine compartment wiring for 1979 with a diesel - should be the same: