I have a 99 Silverado and LS1 fans,what is the best way to wire them up,no toggle switch.I would like to wire them into the computer,i have HP tuners and can make them come on at low temp,on 2-fans or aux fans ??? Please help whats the easiest and best way Thanks

 

Use a Nelson harnes or Black bear one.

 

Never heard of either one ?? Help me out ? Thanks

 

click the blackbear link over here--------------------------------->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
and buy one it just plug right in but the fans will need to be turned on in the tune

 

Cool thanks guys,i couldnt find a phone number for blackbear and tried to email him but it wouldnt send ? I got nelsons number if there the same ??

 

I ordered a Nelson harness and a tuned PCM from them. They should be here Wednesday. I've heard good things about their products so I'm looking forward to it.

 

I talked to Nelson and while driving the fans are always on low speed except when a/c is on then there on high ? Is that good,i want my engine to run as cool as possible ???

 

Well the stock clutch fan is always spinning, so it's pretty much the same thing. When I had my Z28, the fans seemed to be on low most of the time after the motor warmed up. I'm not sure if they were on ALL the time though. I'm guessing the LS1 fans are used to a pretty high duty cycle.

I got my Nelson harness and PCM yesterday. The harness looks very nice, but I won't be able to hook it up until next week. I need to finish rebuilding the motor first.

Did you ask Nelson how he tunes the PCM for the fans, ie what temperatures they are set to?

 

I can program them to come on at whatever temp. with my Hptuners

 

Bought Nelson harness,easy hook up works great,when the engine gets up to temperature that i set in computer they turn on low,and low is not pushing alot of air,when a/c kicke on they both kick on high,there is 3-green wires to hook up for the fans when a/c is on but i have not hooked it up yet not sure which one ? But when that wire gets 12volts it kicks the fans on high,so why couldnt i hook that a/c wire up to the fan power to kick on high when it gets up to temperature instead of low ?Anybody know why this wouldnt work very good ??? Thanks