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

 

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

 

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...

 

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

 

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.

 

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

 

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

 

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.

 

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

 

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;