cooling fans on 1994 LT1 wagon

Has anyone made a modification to the cooling fans, like to the wires that control the fans, thinking of or wanting to install a manual switch to turn at least one, maybe both even if two switches to turn the fan /fans on when I want them to be on. Like in traffic. I know people modify the PCM's to do this at lower temps I would like to avoid the price of that way of doing it and can not have the down time on the car waiting for mods to be done and PCM returned. I very much dislike watching the gauge head to the moon before the fans come on. Why did GM set the turn on temps so darn high is a question I wonder if their is family friendly all ages answer to that one.
Any one out there done this on our set ups. My brother did it to his 1991 Corvette by jumping into the wire that controls the coil on the fan relay, jumped in their and ran a switch to ground, actually two switch one for each fan.
Wire diagram indicated the ECM in his case only provided a ground to the fan relay, never had a problem, if I do that I am very afraid I would fry a PCM. Any feedback would be wonderful.

My 2 cents, have the PCM reprogrammed if you want to drop the temperatures. If you start putting switches and cutting into the wires, you're opening up a can of worms, and you could be risking a failure of the fans.

Tom

Thank you for the reply, I was wanting to use the system that is there, just trip the relay that turns the fan on now. Price of program change and loss of use of the car waiting for unit to come , is why I was wanting to do it as stated is why it is my daily driver even though I am retired I need my car.
I am sure you are correct, with the can of worms statement

Don't. You can easily forget to turn the fan on and cook the engine.

If you pay a few dollars extra the PCM tuners will send you a new pcm that is pre-programmed and then you send yours back as their core. They just swap PCM's really. Its worth not having the down time.

Innovative wiring makes a harness that give you a switch to manually turn on one or both fans, but doesn't stop them from turning on automatically.

I put it in when I had some fan issues, the fans work like stock but can be turn on manually.

I think it's the remote fan harness on the site. http://innovativewiring.com/?page_id=266

It's not cheap but it seems like a better option than cutting into the harness.

complete perfect just exact what I want THANK YOU

Happy to help. It's not too difficult to put in and it's well made.  Make sure you put the switch in a spot not easily bumped into and you remember to turn it off.  It will run when the car is off and drain your battery.

I tried to reply back to your PM but I haven't posted enough to do that yet.