03' standalone wiring conversion

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Jun 16, 2014 | 09:40 AM

Grayguy

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03' standalone wiring conversion

I have an 03' suburban wiring harness I will Be using for my build. So far I have used lt1swap.com to figure out most of my plans, but one of the things I'm wondering about is keeping AC. On lt1swap.com he has it very well Laid out on what I can delete from the harness, but I assume if I want to keep AC I just don't delete anything having to do with the AC system?

Jun 16, 2014 | 11:38 AM

oldgoat69

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From: Atlanta, Ga

What is the engine going into? That may have more to do with answering your question. I am using all of the OE vehicle wiring to run the AC in my car. I only used the signal request to step up the idle and switch on the fans. Works like a champ.

Jun 16, 2014 | 03:00 PM

Grayguy

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It's going in a 98' subaru legacy with currently functioning AC. I am hoping to adapt the subaru compressor to the LS accessory drive, but even if thst works I'm Not sure how to go about wiring it.

Jun 16, 2014 | 09:06 PM

ls1nova71

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From: Liberty, MO

2003 and up trucks don't have a 12v A/C request wire, its run on a serial data line. There is a way to convert the serial data to the older 12v request though, but I'm not sure what tuning software you need to do it. Theres a sponser on here that can do it though, I think its BP. Other than that, you need to find out if your Subaru controls put out the 12v from the switch, if not then all this is moot.

Jun 17, 2014 | 01:13 PM

BP Automotive

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Quote:

Originally Posted by ls1nova71

Thanks for the mention! Yes we can convert it to the old style wired A/C request.

Bill

Jun 17, 2014 | 08:21 PM

FastKat

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It's good to know that there's an active sponsor that does this. I struggled with this years ago but I never got around to putting A/C in the car.

Could you use a tune from a 2002 truck instead?

Quote:

Originally Posted by ls1nova71

Jun 17, 2014 | 09:07 PM

BP Automotive

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From: Columbia, Kentucky

Quote:

Originally Posted by FastKat

It's good to know that there's an active sponsor that does this. I struggled with this years ago but I never got around to putting A/C in the car.

Could you use a tune from a 2002 truck instead?

Not for the Blue/Green DBW you cannot.

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Jun 18, 2014 | 06:19 PM

Grayguy

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Quote:

Originally Posted by BP Automotive

Thanks for the mention! Yes we can convert it to the old style wired A/C request.

Bill

Which part of the wiring would I need to keep for this?

Jun 22, 2014 | 06:50 AM

#10

aknovaman

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From: Hog Back, KS

This should help you for standalone config.

https://spreadsheets.google.com/spre...KSkg2Z3c&hl=en

Jun 22, 2014 | 07:47 AM

#11

BP Automotive

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Quote:

Originally Posted by Grayguy

Which part of the wiring would I need to keep for this?

All of it. Including the ac pressure switch.

Bull

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Jun 22, 2014 | 07:51 PM

#12

Grayguy

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Ok, so I can delete all the normal stuff and leave the AC stuff then have you guys at BP reprogram it to work.

Jun 22, 2014 | 08:10 PM

#13

BP Automotive

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You would have to wire it for the wired ac request. That would be it.

Bill

Jun 23, 2014 | 08:35 AM

#14

Grayguy

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So basically I need to find a van wiring diagram and follow the AC wiring for that?

Jun 24, 2014 | 05:22 AM

#15

aknovaman

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From: Hog Back, KS

Yes. Pm me your email and I can send you the info.

Jun 24, 2014 | 07:13 AM

#16

Grayguy

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PM sent, thank you!

Jun 27, 2014 | 06:38 PM

#17

aknovaman

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From: Hog Back, KS

Here is a link to the manual ac wiring diagram. The PCM file must be set up correctly for this to function correctly (same as express file settings).

https://ls1tech.com/forums/conversio...press-van.html