Black-Syde

iTrader: (7)

Hey I have a 2001 tahoe that I put the 2005 E-fans into. I ordered the nelson harness with the toggle switch and he sent me the standard one. I don't want to go thru the sending stuff back thing. So I wanted to know how do I wire in a toggle switch in it myself? I have to send my tuned Pcm back to Jesse so he can turn on the blue 42 pin. I just should have do that in the first place but I just got a really good deal on the fans. Any help will be great.

Danny

stall speed

iTrader: (1)

tap into blue 42 pin wire to switch and back to ground

budhayes3

iTrader: (19)

The PCM grounds pin 42, so I suppose you could just tap into that wire in the Nelson harness and run a wire to a switch in the cab that's wired to ground.

*EDIT*...Whoops, typing slowly...sorry for the double reply...

Black-Syde

iTrader: (7)

does it matter what gauge the wire is and does it have to have a inline fuse and what amp switch? I have alot of this stuff in the garage just want to make sure I hook it up right with the correct stuff.

Thanks
Danny

TURBHOE

iTrader: (4)

sorry not trying to jack the thread
ok i found a good place to get the fans but where do you get this harness. i went to what i thought was the nelson web site but it didn't show anything about the fan harness.

Black-Syde

iTrader: (7)

go to nelson's web site then go to products then click on GM then it's on the bottom of the page under the SC pulley's

TURBHOE

iTrader: (4)

ok so its the same for flex-a-lite fans ls1 fans and 05 e-fans? does he have the pig tails for the 05 fans too. and it doesn't say a price

Black-Syde

iTrader: (7)

Yes it comes ready to plug into the fans you got to email him and tell him what fans you got and what it's going into. The harness that I got ran me 99.00 shipped. Also if you donot have your PCM tuned to have the #42 pin on the blue side activated the harness will do you no good. Try this (wait4meperformance) web site Jesse can do this to your PCM for 1/4 the price all the other guys are doing it for. PM me for his phone number since I can't post it or the mod will lock this thread.

TURBHOE

iTrader: (4)

check sig i've got hpt. thanks for the info

creederado

On mY GMC I have A/C with the 05 fans and Nelson harness,

Before the wire went into the PCM I (T- Taped) it and ran into the dash to a 2 way swicth, The other end of the swicth was grounded12v-,
When the swicth is activated(grounded) both fans come on low speed.
I believe I used 14 awg the same size as Nelsons wire, its only a millivolt signal anyways.



I did it a little differant on my Step Side,
I used the A/C lead on Nelson harness to a swicth, Than i took the 12+ and - from the cigrette lighter and ran it to the swicth, The A/C trigger requires a 12v+ mv lead to activate it.

So when that swicth is turned on 1 fan comes on high. Both on high with the pcm activated as well.


hope this helps;
here's the swicth on the GMC;