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Does anyone make an extension harness for the LS1 PCM?

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Old 04-22-2008, 08:11 AM
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Default 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.
Old 04-22-2008, 10:44 AM
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Even better if someone makes a harness that plugs into the ECU, and then the other end plugs into the factory harness.
Old 04-22-2008, 01:29 PM
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Originally Posted by 00SilverWS6
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.
Old 04-22-2008, 01:45 PM
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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.
Old 04-22-2008, 01:49 PM
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im pretty sure painless performance sells one
Old 04-22-2008, 02:56 PM
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Originally Posted by xBROKEx
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.
Old 04-22-2008, 03:24 PM
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yep they do just used one of there 4ft extra long harness on my s-10. It was a really nice product.
Old 04-22-2008, 05:13 PM
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What's the Painless P/N for just the extention? Can't seem to find it in their on-line catalog.

Thanks,

Andy1
Old 04-22-2008, 05:20 PM
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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?
Old 04-23-2008, 10:45 AM
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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.
Old 04-23-2008, 04:10 PM
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Default Harness

Originally Posted by IHeartTurbo
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?
Painless has a COMPLETE harness in std or extended length not a connecting harness
Old 04-23-2008, 05:04 PM
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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 ?
Old 04-23-2008, 05:58 PM
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Originally Posted by zman1969
Painless has a COMPLETE harness in std or extended length not a connecting harness
Ha there's no way I'm buying a complete harness.
Old 04-23-2008, 05:59 PM
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Originally Posted by bczee
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 ?
I'll email him right now.
Old 04-24-2008, 10:35 AM
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Just got an email back from Speartech. This is what he said:

Originally Posted by John at Speartech
Sorry, I can't do a discount on odd items like this. Whether it's 2 or 20, I have to pull a guy off of the more expensive products in order to make them.
Old 04-24-2008, 07:53 PM
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Originally Posted by IHeartTurbo
Just got an email back from Speartech.
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.
Old 10-17-2010, 09:49 AM
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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
Old 06-06-2016, 04:11 PM
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I'm guessing nobody is offering a PCM extension (not a full extended harness)?



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