I installed two 9" cooling fans on my '77 "Rat Rod LBC" Spitfire.
I built a nifty control circuit using a comparator chip and a couple of relays...I had hoped to tap into the temp gauge sensor to provide the thermal sensing. This did not pan out, though...the voltage at the sensor seems to be all over the place (gauge works steady).
Does anyone know if the voltage to the temp gauge is "chopped" by the (voltage conditioner)? I really have no idea what that thing does...guess I thought it was a smoothing filter. Can I connect it direct to 12V?
I have a thermistor to use as an alternative...where to mount it kinda confounds me. I also have a '79-80 thermo switch...it is far too large in diameter to mount in the water jacket.
BTW...the goal is to have the two fans work with "staged" control (one comes on at ~180...other comes on at ~195).
Len
I built a nifty control circuit using a comparator chip and a couple of relays...I had hoped to tap into the temp gauge sensor to provide the thermal sensing. This did not pan out, though...the voltage at the sensor seems to be all over the place (gauge works steady).
Does anyone know if the voltage to the temp gauge is "chopped" by the (voltage conditioner)? I really have no idea what that thing does...guess I thought it was a smoothing filter. Can I connect it direct to 12V?
I have a thermistor to use as an alternative...where to mount it kinda confounds me. I also have a '79-80 thermo switch...it is far too large in diameter to mount in the water jacket.
BTW...the goal is to have the two fans work with "staged" control (one comes on at ~180...other comes on at ~195).
Len