scorpion18z

I am considering installing a aux fan by-pass switch to have some control on when to turn on the aux fan on my 1982 corvette. I live in Florida and the engine does get hot during the summer months, but apparently not hot enough to trigger the aux fan @238 degrees. I would like any feedback on the pros/cons in installing this rocker switch controlled within the car. I am aware of the 30 amp requirement for the switch and the wiring, but is it really necessary? My primary concern is that during traffic and in-town driving, with the A/C on, the water temp rises and the engine seems to not perform as well as it does during the winter (if you want to call it winter in Florida) months. I would install a 10 gauge wire from one terminal of the temp switch through a rocker switch and back to the other terminal. This, in theory would not eliminate the temp switch, it would just allow me to complete the connection (that the temp switch does at temperature) at an earlier setting for a desired set of time.

jnb5101

I'm sure that your fans are controlled by a relay. Wire the auxiliary switch so that the relay closes, which usually means completing the relay coil circuit to ground.

Street Rat

I changed the sensor on my '81 so the fan comes on sooner. Here is a link to the part that I used.

http://www.summitracing.com/parts/sum-890017/overview/

The13Bats

The factory wanted these cars to run hot for emissions reasons, I live over in orlando and both my 81's had extra electric fans I added for better temps and ac in our weather,
The switch street rat posted will do the trick but shop around they can be had cheaper,
Yes, big draw items like fans really should have a relay.