1971 Blazer - Wiring Harnes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**68ls1** · 10-12-2022, 06:36 AM

Has anyone got feedback on the American Autowire harness 510089 into a Blazer.

My understanding is they are for SWB truck so are a little longer.

Is there a better option.

My planned electrical upgrades are Holley Terminator fuel injection, with in tank fuel pump. Thermo fan, headlight upgrade, stereo, possibly E-Stopp park brake.

**jaros44sr** · 10-12-2022, 08:11 AM

I used M&H, great service and support, answered all my stupid questions without a blink, my mods were electric fan, headlight wire size and relays for horn and lights, plug and play.

I've since put in FAST XFI and XIM coil near plug

This was all just engine compartment so I can't answer about the part number you mention

SeventyOne · 10-12-2022, 04:57 PM

Quote:

Originally Posted by 68ls1

Has anyone got feedback on the American Autowire harness 510089 into a Blazer.

My understanding is they are for SWB truck so are a little longer.

Is there a better option.

My planned electrical upgrades are Holley Terminator fuel injection, with in tank fuel pump. Thermo fan, headlight upgrade, stereo, possibly E-Stopp park brake.

I used the AAW 510089 kit for my blazer. Running basically the same upgrades you are more or less. It's a fantastic wiring kit and would buy it again.

**Tom Vogel** · 10-13-2022, 10:35 PM

I used the AAW Classic Update kit for my72'. I would definitely use one again.

**Blazerowner** · 10-13-2022, 10:57 PM

Same here. Would not use another kit.

10-12-2022, 06:36 AM	#1
68ls1 Senior Member Join Date: Jan 2008 Location: Melbourne, Victoria, Australia Posts: 217	1971 Blazer - Wiring Harnes Has anyone got feedback on the American Autowire harness 510089 into a Blazer. My understanding is they are for SWB truck so are a little longer. Is there a better option. My planned electrical upgrades are Holley Terminator fuel injection, with in tank fuel pump. Thermo fan, headlight upgrade, stereo, possibly E-Stopp park brake.

10-12-2022, 08:11 AM	#2
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,766	Re: 1971 Blazer - Wiring Harnes I used M&H, great service and support, answered all my stupid questions without a blink, my mods were electric fan, headlight wire size and relays for horn and lights, plug and play. I've since put in FAST XFI and XIM coil near plug This was all just engine compartment so I can't answer about the part number you mention __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

10-13-2022, 10:35 PM	#4
Tom Vogel 2WD Jimmy Join Date: Mar 2005 Location: Davis County, Utah Posts: 2,565	Re: 1971 Blazer - Wiring Harnes I used the AAW Classic Update kit for my72'. I would definitely use one again.

10-13-2022, 10:57 PM	#5
Blazerowner Senior Member Join Date: Apr 2006 Location: Yuba City, Ca Posts: 1,953	Re: 1971 Blazer - Wiring Harnes Same here. Would not use another kit. __________________ Kirk 72 Blazer CST 4wd highlander

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