Does anyone make an extension harness for the LS1 PCM?
 

I've got to lengthen my wires 3 feet or so, so I was wondering if someone made a harness with all the correct wire colors already ready to splice in. It would make it a lot easier than doing one wire at a time.

Even better if someone makes a harness that plugs into the ECU, and then the other end plugs into the factory harness.

I don't want that. The connectors would look really ugly sitting under the hood IMO.

I bet if you talked to John at Speartech you'd get some info on that... He might even be able to do something for you with one of his harness.... Gonna be $$$$, but will be nice and clean and simple when its done.

The only other thing I can think of is lengthening each and every wire that you need longer one by one.

J.

im pretty sure painless performance sells one

Yup, 4ft extensions. Come pre-fabbed with connectors and everything. I *believe* they are already modified for swaps too.

yep they do just used one of there 4ft extra long harness on my s-10. It was a really nice product.

What's the Painless P/N for just the extention? Can't seem to find it in their on-line catalog.

Thanks,

Andy1

I can't seem to find it on Painless' site, but is it a harness to splice in between the main harness and the PCM connectors? Or does it just plug into the stock PCM connections and then into the PCM?

I just got an email back from Speartech. They said they'd make me a harness for $50 for each connector (red + blue), so $100 total.

Harness
 

Painless has a COMPLETE harness in std or extended length not a connecting harness

I wonder if Speartech would make a group discount if there were enought of use to buy them !?

IHeartTurbo - I think there would be enough interest for a group discount..? Since you talked to John at Speartech, could you ask him about that ?

Ha there's no way I'm buying a complete harness.

I'll email him right now.

Just got an email back from Speartech. This is what he said:

:(

I'm impressed. I've sent several emails to Speartech asking questions about their harnesses and they haven't replied to a single one yet.

i know this is an old thread but I was wondering if anybody ever found an extension harness that plugs into a standard length harness. Im running into this problem now and dont want to cut and splice the pcm end of the harness if I dont need to. thanks

I'm guessing nobody is offering a PCM extension (not a full extended harness)?