Sanden 508 Hot Rod LS Swap A/C Wiring How-To Diagrams

[@brianfielder3798]

Thank you, I have been trying to figure this out for awhile

[@kidfresh2115]

This is very helpful! I just got my compressor and bracket mounted. Now to dive into this wiring.

[@dantaethomas766]

I have copied and looks good, makes total since just gotta figure out the diodes. This helped alot!!!

[@Balata_Garage]

how did you wire the trinary switch

[@showtime2203]

Hey brother nice work what state are you in I can use your help

[@solis2320]

hey cliff just did an ls swap and used dirty dingo bracket to install sanden compressor questioning have is what size and fitting type are the sanden tie ins

[@CliffsHowTo]

The sanden 508 like what I have is Compressor Discharge fitting #8 (3/4" - 16 thread) Compressor Suction fitting # 10 (7/8" - 14 thread)

[@solis2320]

man your a life saver thank u cliff

[@solis2320]

and that is a female fitting right ?

[@CliffsHowTo]

The fitting on the hose is female, and the compressor is male.

[@GuillermoGarcia-c5q]

Hey i tried wiring the ac on my 5.3 s10 swaped like u did! the dark green wire from fuse box that plugs into ac conpressor is not getting power i tried using a jumper wire from terminal 30 to 87 on relay it works does the Ecu control the power to the dark green wire for the ac compressor?

[@CliffsHowTo]

Honestly, it’s been a while since I messed with this. I put a diagram in the video, that I think is pretty good. I know that you do have to have the ECU programmed correctly for it to work though.

[@dantaethomas766]

I’m stuck! What is the C2 plug fuse box B3 and B4?? Could I run the BRN/Blk wire with in line fuse straight to ac compressor?

[@CliffsHowTo]

Those would be plugs on the AC relay, in the vehicles fuse box. Sorry that wasn’t made clear.

[@gerardolopez5875]

Any link for bracket

[@GuillermoGarcia-c5q]

Hi I been following u since u started the swap in your s10 I have a question is the trinary switch your using a male or female im gonna working on the ac in my ls swap 5.3 s10 but I noticed where u installed the trinary switch mine needs a male switch did u use like an adapter

[@CliffsHowTo]

Thanks for watching! Very much appreciated! This is exactly what I used: amzn.to/4btpNbU

[@GuillermoGarcia-c5q]

Thanks hey another question I saw the diagram your using in your s10. pin 55 that's in ECU is "Ac low pressure switch signal " u grounded that wire from ECU?? My question is simple did u grounded pin 55 wire from the ECU ??

[@CliffsHowTo]

Yes. In the C2 plug for the ECU, pin 55 is grounded.

[@GuillermoGarcia-c5q]

@@CliffsHowTo thank u so much I order the trinary switch I was able to do the swap on my s10 all thanks to you I used your information and parts and it made my life slot easier your s10 looks amazing with the Corvette rims I bought a Btr truck Norris cam im in the process of buying a Holley terminator xmax for the 5.3 thanks a lot man do u plan to cam turbo or do nitrous on the s10?

[@TonyGarciaLB]

On your fan relay would you recommend to tap into both fans or just one off the trinity switch ????

[@CliffsHowTo]

I did both.

[@LidZLife]

Great video! Quick question. Could you also use an inline fuse in place of the C2 Fuse Box? Where is the relay for the compressor? Is it in the C2?

[@CliffsHowTo]

Thank you. I am running through the C2 for the a/c relay circuit. But sure, you could not use that, and wire up whatever you need externally.

[@LidZLife]

@@CliffsHowTo Thanks so much for the info and the reply! Stay safe!

[@JOEMORALES70]

Any chance of you knowing which wires to connect on the ECU having the blue/green connectors? I have a 05 vortec swapped into a 94 c1500. This ECU/harness doesn't have any wires in C2 17 and 55

[@CliffsHowTo]

Lt1swap.com has all the wiring diagrams for these ECUs. He also has a page explaining how to hook up the a/c in various ways. It’s a very helpful site! You may have to add wires to the open pins though. I think I had to add a few, for various reasons. (Such as wiring the electric fans)

[@ThelifeofBigJody]

What part number upper radiator hose you running

[@CliffsHowTo]

S10 LS Swap Parts List and Total Cost! Everything You Need To Know! kzbin.info/www/bejne/gZeufJVritqtrNE

[@bhwjrproductions]

So if I wire mine to work independent of the LS swap ecu how will it idle correctly as the ac cycles on and off?

[@CliffsHowTo]

So, I programmed my computer to idle up when the ECU got the AC on signal from the cab. I just couldn’t figure out how to get the ECU to work off a sensor to control the compressor, based on pressure. That’s where the trinary switch comes in.

[@laurencevillegarage]

Great video! I'm currently looking at how to power up and operate a low mount sanden a/c compressor on my '91 w/5.3. A question I have is about your first diagram....did you have the pcm set up for both a/c request and cycling switch to operate? If so, could this create a problem, I mean to say, should it be one or the other and not both? And the wire running from c2 pin43, can it run directly to the compressor but with an inline fuse OR would that be a relay? Thanks

[@CliffsHowTo]

I tried programming it in every possible way, using HP tuners, and couldn’t get it to work. I’m not sure what I was doing wrong. But it works just fine like this! Ice cold AC!

[@laurencevillegarage]

@@CliffsHowTo Thank you for responding, I'll give it a try!

[@laurencevillegarage]

@@CliffsHowTo of the 2 diagrams, one with computer and one without, which one would you recommend?

[@gerardolopez5875]

I dnot see the 90 a/c bracket!! Did it had issues??? Or

[@CliffsHowTo]

The one I had was flexing a bit, and the belt would jump a rib. I made the one that’s in the video.

[@gerardolopez5875]

@@CliffsHowTo @ how much? For making me one

[@gerardolopez5875]

@@CliffsHowTo @ iam in texas

[@CliffsHowTo]

It took me far too long to make, honestly! And I don’t currently have a drill press. I think they sell ones that are similar.

[@gerardolopez5875]

@@CliffsHowTo@ on the diagram picture, does diodes are backwards?? Or?

[@chickenfoundation9323]

How does it ground? Through the case?

[@CliffsHowTo]

Yes.

[@obslife1985]

Does yours ac compressor make any noise when u accelerate or at high RPMs?

[@CliffsHowTo]

I haven’t noticed it making any noise.

[@gerardolopez5875]

I domt see the upper radiator hose! On truck pump location

[@CliffsHowTo]

Using a Camaro ss water pump.

[@gerardolopez5875]

@@CliffsHowTo @ ok,,, what about the r4 to sanden adapter little plates? U still have them? I need ones!!

[@CliffsHowTo]

I think they’re in the garage somewhere. Email me at [e-mail], and we can work something out.

[@gerardolopez5875]

@@CliffsHowTo @ how much?$?

[@gerardolopez5875]

@@CliffsHowTo @ how much?

[@nickgonzalez2707]

What intake are u running

[@CliffsHowTo]

Factory truck intake

[@stellingbanjodude]

Just an fyi, GM doesn’t use “ECU” in their nomenclature when talking about or describing an engine computer. They use “ECM” engine control module or “PCM” powertrain control module.