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AC system on 98 Ls1 swap

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Old Nov 30, 2006 | 08:13 AM
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Default AC system on 98 Ls1 swap

Anybody have the AC wiring figured out on a 98 LS1?

I just finished my swap, fired right up, damn I was edgy for a bit, lots of wires but in all the FAQ's and searches I did people disregard the AC system all together.

I have a plug that goes into the cabin that was not used at all, I assume it has something to do with AC.

thanks,
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Old Nov 30, 2006 | 08:38 AM
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That's going to be the A/C request wire more than likely. Hook it to a switch to request the PCM to turn on the compressor.

Yours shouldn't be too terribly tough, I hacked and whacked an entire LS1 A/C system into a Mustang - fiberglassing up the heater box under the dash and everything
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Old Nov 30, 2006 | 03:51 PM
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its more then one wire its like 6 of them on this one conenctor, its the only connector not adressed in all the wiring diagrams/pinout diagrams in the FAQ.
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Old Nov 30, 2006 | 08:25 PM
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There should be three connectors going inside the car. The blue connector is the one that has the A/C request wire, and its the green wire on that blue connector. Those three connectors are full of useful stuff - park/neutral switch, brake pedal switch, VSS, serial data, SES light wire, etc. I mapped out the ones relevant to my conversion so I can help you with at least those if you need 'em.
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Old Dec 1, 2006 | 07:37 AM
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I got those all hooked up

but I have 4 connectors going inside the three standard ones I have hooked up and there was a 4th which I thought was additional AC stuff. I'll have to snap a pic.

thanks,
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Old Dec 1, 2006 | 08:22 AM
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Its a 98 LS1 engine harness?? Yeah, snap a pic and I'll see if it matches mine. If nothing else, just backtrace the wire from the PCM.
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Old Dec 1, 2006 | 07:37 PM
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here is a shitty pic but you get the idea, the three normal connectors are to the right, the one taped to the left is the left over one.
Attached Thumbnails AC system on 98 Ls1 swap-p1010d011.jpg  
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Old Dec 2, 2006 | 06:35 AM
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Me. I posted how I did it on the torquecentral.com rx-7 swap forum. It is not hard, but there are a number of wires taht need to be addressed. The hardest part is finding the correct fitting for the LS1's refregerant pressure sensor, and I posted about that on this forum.
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