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Old 08-11-2012, 10:32 PM   #1
dhpenner
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LS1 in a 72 Wiring Harness Help Me If You've Done One Before?

I'm just laying out my stand alone harness for my LS. Can anyone tell me the best place to run the wires inside the cab? I don't need anymore holes in the firewall. If you've done a swap before please let me know. Pictures are always appreciated.

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Old 08-12-2012, 09:31 AM   #2
ETsC10
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Re: LS1 in a 72 Wiring Harness Help Me If You've Done One Before?

We have a special area of the board devoted to these swaps...moving you over there.
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Old 08-12-2012, 10:00 AM   #3
C10_ustacould
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Re: LS1 in a 72 Wiring Harness Help Me If You've Done One Before?

I am installing a PSI stand alone harness right now and I routed mine into the cab like this...
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Old 08-12-2012, 12:54 PM   #4
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Re: LS1 in a 72 Wiring Harness Help Me If You've Done One Before?

same here...used the stock wiring harnes hole in the firewall....
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Old 08-12-2012, 02:32 PM   #5
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Re: LS1 in a 72 Wiring Harness Help Me If You've Done One Before?

I used the clutch linkage hole and mounted the ECM on the brake support.

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Old 08-13-2012, 11:48 PM   #6
ls1nova71
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Re: LS1 in a 72 Wiring Harness Help Me If You've Done One Before?

Are you putting the PCM inside the cab, or just a few wires for gauges and ALDL connector?
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Old 08-14-2012, 04:47 PM   #7
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Re: LS1 in a 72 Wiring Harness Help Me If You've Done One Before?

I want everything in the cab and tucked way up. The clutch linkage hole is a good idea. I had it marked for filling but it might finally serve a purpose. Thanks for all your input.
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Old 08-15-2012, 09:13 PM   #8
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Re: LS1 in a 72 Wiring Harness Help Me If You've Done One Before?

Bucksss- Where did you get your grommet? I can't find one anywhere and where are you guys mounting your computers?
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Old 08-15-2012, 09:17 PM   #9
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Re: LS1 in a 72 Wiring Harness Help Me If You've Done One Before?

My grommet came on the PSI harness. I am currently building a mount that will be in the glove box area.
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