GM LS engine harnesses

I didn’t think I would be putting them up for sale as a generic fit item, but I’m pretty dissatisfied with the harnesses that have been brought to me. I had a harness brought in by a customer, built by an outfit that makes lots of these harnesses. It fits like crap, looks like crap, and lastly.. it was shorted to power. Not cool. Especially when you’re 600$ into it plus shipping and having it installed. Yuck.

I fixed it.

1 Half a harness 2 Most of a harness

I made it fit better and look better. I shaved some weight off it. I made it more heat tolerant and more durable. I gave it the smog provisions it was missing (which isn’t their fault, the customer bought a harness with no smog equipment). Overall, this harness is better. Much better. And now I want you to have much better, too.

3 Finished product 4 Harness and computer

I’m posting some photos of harnesses I’ve made in house for LS conversions. Some of the conversions I did here in house, some of them were brought to me with no wiring. Drop me a line at josh@cjsgarage.net or call me at 925/726.4257 if you want to get a harness made.

6 Fuse box close up Brand new connectors, brand new terminals, brand new wires

Brand new connectors. Not a cut down harness. Brand new terminals, crimped like factory. Brand new wires, no soldering joints. Fuse box included for as plug and play as possible.

8 PCM connectors close up 9 Harness on the table

11 Harness on the table 3 12 Harness installed

These are some photos of a harness I just made for a 1972 Datsun 240Z that got an LS conversion.

13 Harness installed 14 Harness installed close up

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15 Harness installed close up 2 16 Computer mock up

17 Computer mock up 2 19 Harness installed close up 4

18 Harness installed close up 3 20 Harness installed close up 5

Here’s a few that I’ve done before, too. They’re reposts, but you can get the idea that there’s differences between them because there’s different ways of setting up the car.
1970 Camaro LS swap semi-finished wiring harness 1970 Camaro LS1 swap

Yes, there are coils on this car. No, they’re not visible.
The pictures will expand if you click on them. It’s a little hard to see the harness, unless you blow up the photo. Granted, the discreet look is what we were going for in this build.

LS Swap 1970 Camaro fuse box FinishedProduct

The photograph on the left is of the hidden computer that went into the 70 Camaro. The fuse box is the only thing on the outside of the plate. Same splash proof fuse box used on the harnesses being built now.
The photo on the right is of a car that had the Holley valve covers for mounting the coils directly to the valve cover. I obviously compensated for this by deleting the coil junctions. Very clean look, I’m really proud of this harness. Drive by wire on this car.

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