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  #21  
Old 11-22-2015, 12:35 PM
randy randy is offline
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thank you. Things are chugging along.

Headlights, front turns, rear tails all work

How do i know which the vss ground and vss signal wire is coming from the GMPP kit? They just state vss high and vss low. I need to know this to hook up my samco reverse lock out wiring.

4 wires come from the samco unit and 2 wires to the reverse lights so ill most likely just run a 4 wire connector to the to the transmission and route it thru the gas pedal mount hole which i still need a cover for.

updated bulkhead connector. BTW putting the DSE wiper motor in the bulkhead was very easy.

Install the wires in the dse motor bulkhead. Route them to the AAW bulkhead. Cut all the wires. Put the correct ends on the dse bulkhead wire ends and plug into the engine bulkhead connector. Route the same color wires in the inside of the fuse box except the yellow wire. Remove the white wire from the fuse box from the fuse side and the engine side and replace that with the yellow wire. Now take the dse fuse out and install it in the wiper fuse location of the AAW kit. Pretty simple
Current bulkhead layout.



diagram for my transmission harness

Last edited by randy; 11-23-2015 at 06:46 PM.
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  #22  
Old 12-13-2015, 07:15 PM
randy randy is offline
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Default gmpp/ vintage air fan wiring

The line coming from the GMPP harness is it a ground or 12v feed?
#1 where does the feed from the GMPP harness go to so it ties into the passenger fan? Im guessing #86 since i think its a ground
#2 Sorta the same question as above. Is the gmpp line a ground or 12v feed? If a ground Then i would need to supply the fan with a 12v feed. If its a 12v feed then run that wire directly to the positive on the fan and ground the fan.
#3 Do i need a relay between the GMPP kit signal wire to the drivers side fan since the line is already fused and relayed according to the instructions?

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  #23  
Old 12-14-2015, 03:02 AM
cjsgarage cjsgarage is offline
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GM typically uses power to cycle the compressor clutch and the clutch has a black ground wire that grounds it to the engine block. On LS stuff the comtrol wire is power and it's dark green usually.

But i wouldn't use any of their wiring for your vintage air set up.

use the wire coming from your controls to kick the compressor. Vintage air is a blue wire with a bullet connector. The trinary switch interrupts the blue wire.
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  #24  
Old 12-14-2015, 10:19 PM
randy randy is offline
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yes but i want my gmpp controller to turn on both fans when the temp gets to the correct level but have the vintage air unit only turn on the secondary fan.

Short version

gmpp controls driver and passenger fan

Vintage air controls passanger fan only

How do i combine the gmpp signal as another signal activation in the vintage air wiring?
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  #25  
Old 12-14-2015, 11:40 PM
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Vince@Meanstreets Vince@Meanstreets is offline
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Quote:
Originally Posted by randy View Post
yes but i want my gmpp controller to turn on both fans when the temp gets to the correct level but have the vintage air unit only turn on the secondary fan.

Short version

gmpp controls driver and passenger fan

Vintage air controls passanger fan only

How do i combine the gmpp signal as another signal activation in the vintage air wiring?
The PCM uses a grounding circuit....which goes to the relay not directly to the fan.

edit, according to your diagram it would be pin 86
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Last edited by Vince@Meanstreets; 12-14-2015 at 11:44 PM.
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  #26  
Old 12-15-2015, 06:19 AM
workng247 workng247 is offline
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Quote:
Originally Posted by randy View Post
yes but i want my gmpp controller to turn on both fans when the temp gets to the correct level but have the vintage air unit only turn on the secondary fan.

Short version

gmpp controls driver and passenger fan

Vintage air controls passanger fan only

How do i combine the gmpp signal as another signal activation in the vintage air wiring?
just use switched ground from va trinary to gmpp fan relay to trigger fans

or:

check out pcmofnc.com, they have a 2 speed dual fan kit for the gmpp controller and an a/c fan bump circuit. Requires adding relays and pins to the gmpp load center and a patch for the pcm. The a/c circuit requires trigger 12v so can work with va binary. They provide everything (including instructions and diagrams) to get it done. Good stuff.

http://pcmofnc.com/index.php/lshotrod

btw: you can add a pin to one of the gmpp pcm connectors to activate rlo to work like factory

Oh, the big grey wire is the power feed for fans, you need this wire

Last edited by workng247; 12-15-2015 at 06:25 AM. Reason: more info
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  #27  
Old 12-15-2015, 08:31 PM
randy randy is offline
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thats exactly that i was thinking since pin 86 is where you would also install a manual override switch. Instead of having a toggle switch as a manual I'm really just replacing it with a ecu switch . Thank you and this makes it very easy.

Do i just split the ecu wire and one going to the fan and the other to pin 86 of the other fan or do i need to split it and run the split into two relays?
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  #28  
Old 12-15-2015, 09:36 PM
randy randy is offline
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anyone else seen this?


http://www.gm-efi.com/news/pcm-ncs-g...ctric-fan-kit/
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  #29  
Old 12-16-2015, 12:31 AM
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Quote:
Originally Posted by randy View Post
thats exactly that i was thinking since pin 86 is where you would also install a manual override switch. Instead of having a toggle switch as a manual I'm really just replacing it with a ecu switch . Thank you and this makes it very easy.

Do i just split the ecu wire and one going to the fan and the other to pin 86 of the other fan or do i need to split it and run the split into two relays?
you have two wires right? do you have two fans? if so you run one relay per fan.
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  #30  
Old 12-16-2015, 11:05 AM
randy randy is offline
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1 wire, 2 fans


From the GM rep. I wasnt aware that the fans also turn off and on based on speed

There is just the one circuit to the fan , you can parallel this circuit to two fans as long as it does not draw more than 30 amps
This word doc is description and operation of the fan circuit

LS controller, cooling fan control

Fans turn on and off by 2 things, temperature and vehicle speed.

Vehicle speed less than 15 kph.
-If coolant temp goes above 95-97C, FAN ON.
-If coolant temp goes below 95-97C, FAN STAYS ON.

Vehicle speed above 15kph
-If coolant temp goes above 95-97C, FAN ON.
-If coolant temp goes below 95-97C, FAN OFF.

Vehicle speed drops below 5 kph
-If coolant temp goes above 95-97C, FAN ON.
-If coolant temp goes below 95-97C, FAN STAYS ON.

If the fan goes off once above 15 kph, and the temp stays below the trigger temp, the fans will be off below 5 kph and not turn on until the temp reaches the trigger.

Cycling the ignition will turn off the fan if the temp is below the trigger. Vehicle speed is needed to turn OFF the fan once it is turned on.

Last edited by randy; 12-16-2015 at 11:32 AM.
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