Good whole truck wiring harness for LS swap? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bigmoe · 01-15-2019, 03:10 PM

My 65 will get a whole rewire. I'll probably get a universal kit, perhaps an EZ Wire. Is there a particular circuit number I should get considering this will be an LS swap?

**mongocanfly** · 01-15-2019, 03:54 PM

I've got american auto wire for mine....very nice kit...i contacted them and told them what all I had on the truck and they recommended the 15 circuit system for what I had...
Make a list of all the electrical components you have and go from there..
but it doesn't matter which truck side harness you use...the LS harness is standalone...I'm using PSI for my LS side ....
To make the LS harness work all you need is constant hot,switch on hot, and grounds...

BR3W CITY · 01-15-2019, 05:12 PM

I had fuelinjectionconnection do mine. I wish their name were shorter haha.

Pontitruck · 01-16-2019, 08:14 PM

American Autowire 500560 for mine. Still in the process but the only thing I don't like so far is the headlight harness, you have to make it from your old one, no wire lengths provided just a roll of wire.

88Stanger · 01-22-2019, 04:46 PM

used a complete 15 circuit kit then got with PSI Conversions and used their standalone kit for the LS. Worked great.

Putzer · 01-25-2019, 01:47 AM

got an engine harness from speartech and the rest from american auto wire. make sure to get the Classic Update Series Wiring Kit.

**70CHEVYBB** · 01-27-2019, 01:08 PM

American autowire for the truck and psi for the stand alone engine harness. I used the clssic update in my 72 nova and was very happy

01-15-2019, 03:10 PM	#1
bigmoe Registered User Join Date: Oct 2014 Location: Brandon, Manitoba, Canada Posts: 995	Good whole truck wiring harness for LS swap? My 65 will get a whole rewire. I'll probably get a universal kit, perhaps an EZ Wire. Is there a particular circuit number I should get considering this will be an LS swap?

01-15-2019, 03:54 PM	#2
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,670	Re: Good whole truck wiring harness for LS swap? I've got american auto wire for mine....very nice kit...i contacted them and told them what all I had on the truck and they recommended the 15 circuit system for what I had... Make a list of all the electrical components you have and go from there.. but it doesn't matter which truck side harness you use...the LS harness is standalone...I'm using PSI for my LS side .... To make the LS harness work all you need is constant hot,switch on hot, and grounds... __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver Last edited by mongocanfly; 01-15-2019 at 03:59 PM.

01-15-2019, 05:12 PM	#3
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Good whole truck wiring harness for LS swap? I had fuelinjectionconnection do mine. I wish their name were shorter haha. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

01-16-2019, 08:14 PM	#4
Pontitruck Registered User Join Date: Sep 2018 Location: South of the Indy 500 Posts: 116	Re: Good whole truck wiring harness for LS swap? American Autowire 500560 for mine. Still in the process but the only thing I don't like so far is the headlight harness, you have to make it from your old one, no wire lengths provided just a roll of wire.

01-22-2019, 04:46 PM	#5
88Stanger Registered User Join Date: Mar 2015 Location: Washington State Posts: 1,654	Re: Good whole truck wiring harness for LS swap? used a complete 15 circuit kit then got with PSI Conversions and used their standalone kit for the LS. Worked great.

01-25-2019, 01:47 AM	#6
Putzer Registered User Join Date: Jun 2018 Location: Columbus Posts: 95	Re: Good whole truck wiring harness for LS swap? got an engine harness from speartech and the rest from american auto wire. make sure to get the Classic Update Series Wiring Kit.

01-27-2019, 01:08 PM	#7
70CHEVYBB Senior Member Join Date: Feb 2012 Location: chillicothe, illinois Posts: 690	Re: Good whole truck wiring harness for LS swap? American autowire for the truck and psi for the stand alone engine harness. I used the clssic update in my 72 nova and was very happy



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