Wiring Schematic - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LikeARock · 10-11-2004, 03:42 PM

I just put my 72 Blazer back together with a new motor and I am having some problems with the ignition wiring. It starts okay but when the key is back in the run position there isn't any power to the coil. I am not so sure about the wiring because I just bought the truck and they have added an HEI distributor and done a few other hack jobs on the wiring. I was wondering if anyone has any wiring schematics that might help me sort this out, Thanks

Chris

LUV2XCLR8 · 10-11-2004, 04:12 PM

CAN'T HELP YA, BUT SOMEONE ELSE WILL

WELCOME 2 THE BOARD FROM WEST TN.

GREATEST (TRUCK BOARD ) PLACE ON EARTH

DON'T FORGET 2 FILL OUT YOUR LOCATION
UNDER THE "USER CP" IN TOP RIGHT CORNER

Jimmy72custom · 10-11-2004, 07:30 PM

You need to run a new coil wire anyway if you added HEI. The stock wire is probably a resister wire. Run a ten gauge wire from the fuse block to the HEI distributor. On the right side of the fuse block you should see where you can use a female spade to hook to (Ignition unfused) terminal, Hope this helps

bouncytruck · 10-11-2004, 08:03 PM

Here are the wiring diagrams a board member scanned and posted for all to use.

http://www.geocities.com/chevroletc1070/wiringdias.html

LikeARock · 10-14-2004, 03:02 PM

Thanks for your help, I got it all straigthened out and runs good now

10-11-2004, 03:42 PM	#1
LikeARock Registered User Join Date: Oct 2004 Location: San Diego, CA Posts: 10	Wiring Schematic I just put my 72 Blazer back together with a new motor and I am having some problems with the ignition wiring. It starts okay but when the key is back in the run position there isn't any power to the coil. I am not so sure about the wiring because I just bought the truck and they have added an HEI distributor and done a few other hack jobs on the wiring. I was wondering if anyone has any wiring schematics that might help me sort this out, Thanks Chris

10-11-2004, 04:12 PM	#2
LUV2XCLR8 The LuvShack Garage Join Date: Jan 2004 Location: Maple Grove, TN (West Side) Posts: 30,475	CAN'T HELP YA, BUT SOMEONE ELSE WILL WELCOME 2 THE BOARD FROM WEST TN. GREATEST (TRUCK BOARD ) PLACE ON EARTH DON'T FORGET 2 FILL OUT YOUR LOCATION UNDER THE "USER CP" IN TOP RIGHT CORNER __________________ Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Big Piggy: "Goliath" 07 Kodiak C4500 Lil Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T

10-11-2004, 08:03 PM	#4
bouncytruck SKINNY TIRES RULE! Join Date: Sep 2001 Location: Bothell, WA Posts: 11,049	Here are the wiring diagrams a board member scanned and posted for all to use. http://www.geocities.com/chevroletc1070/wiringdias.html __________________ bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L

10-11-2004, 07:30 PM	#3
Jimmy72custom Registered User Join Date: Apr 2004 Location: Willits Ca Posts: 261	You need to run a new coil wire anyway if you added HEI. The stock wire is probably a resister wire. Run a ten gauge wire from the fuse block to the HEI distributor. On the right side of the fuse block you should see where you can use a female spade to hook to (Ignition unfused) terminal, Hope this helps

10-14-2004, 03:02 PM	#5
LikeARock Registered User Join Date: Oct 2004 Location: San Diego, CA Posts: 10	Thanks for your help, I got it all straigthened out and runs good now



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