Need Wiring diagramhelp!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70GMC_BOB · 10-10-2005, 02:00 PM

My dad and I rebuilt the 350 and got the engine re-installed last weekend in my 72 chev 3/4 ton 2wd truck(w/ HEI). When we initially tried to start it it cranked then backfired and lost all power(no lights or anything). I believe it blew a inline fuse. I need a wiring diagram for the engine for a reference. I do have the wiring diagram for a 69 but do not know if they are the same?

I also need a wiring diagram of a hei modification as it was already installed when I bought the truck.

I am going to start troubleshooting today after work.

I forgot my camera when we installed. I will post pics when it is back at my house.

Thanks
70_GMC_BOB

10-10-2005, 02:00 PM	#1
70GMC_BOB Registered User Join Date: Jul 2001 Location: Lynnwood, washington Posts: 121	Need Wiring diagramhelp!! My dad and I rebuilt the 350 and got the engine re-installed last weekend in my 72 chev 3/4 ton 2wd truck(w/ HEI). When we initially tried to start it it cranked then backfired and lost all power(no lights or anything). I believe it blew a inline fuse. I need a wiring diagram for the engine for a reference. I do have the wiring diagram for a 69 but do not know if they are the same? I also need a wiring diagram of a hei modification as it was already installed when I bought the truck. I am going to start troubleshooting today after work. I forgot my camera when we installed. I will post pics when it is back at my house. Thanks 70_GMC_BOB __________________ 1972 chev c20 2wd lwb 350v8/th350. (dad's)1970 gmc longstep (9ft commercial bed), 1 ton, 2wd, 350/th400.



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