Nelson Harness = Fail - Convert 1 Wire To 2 Wire?
10-06-2014, 11:11 PM
#12
I pulled the AC + trigger off my AC and ran it through a relay that was triggered by a 220 grounding water temp sensor.
Got tired of my flexlites sounding like a jet engine clicking on and off while sitting in a drive through.
After making the adjustment, my fans never went into high mode, temp never reached 220, even in Texas summer heat.
Its a complete waste to run the high speed trigger on the AC.
Got tired of my flexlites sounding like a jet engine clicking on and off while sitting in a drive through.
After making the adjustment, my fans never went into high mode, temp never reached 220, even in Texas summer heat.
Its a complete waste to run the high speed trigger on the AC.
10-08-2014, 01:21 PM
#16
Thanks for the input. I'd rather modify this harness to use the editable on/off temps in the pcm though. That way I can adjust it later if I change out the t-stat etc...
Someone has to have done this conversion. Anyone? I really don't feel like paying another 125.00 for another harness.
A wiring schematic on the 2 wire setup would probably work too.
Mike
Someone has to have done this conversion. Anyone? I really don't feel like paying another 125.00 for another harness.
A wiring schematic on the 2 wire setup would probably work too. Mike
10-08-2014, 01:36 PM
#17
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Glad you are happy with your painless harness but there are advantages to having the PCM to control the fans. With PCM control you also get fan control with A/C pressures. It works fine if you just avoid buying the 1 wire harness. Either buy the aftermarket 2 wire harness or get a factory harness from a 05-07 classic truck at a salvage.
10-08-2014, 03:48 PM
#18
You might want to look into wiring like the 02 Camaro that uses the 3 wire AC pressure switch. I use the 3 wire pressure switch with a Volvo 2 speed fan and relay with 0411 pcm and it works great.
This link breaks down the specifics.
http://www.pacificp.com/forum/viewto...r=asc&start=40
This link breaks down the specifics.
http://www.pacificp.com/forum/viewto...r=asc&start=40
10-09-2014, 02:25 PM
#19
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You might want to look into wiring like the 02 Camaro that uses the 3 wire AC pressure switch. I use the 3 wire pressure switch with a Volvo 2 speed fan and relay with 0411 pcm and it works great.
This link breaks down the specifics.
GM Performance :: View topic - E-fans.....FINALLY
This link breaks down the specifics.
GM Performance :: View topic - E-fans.....FINALLY
Mike