Electric fan relay/temp sensor/temp gauge?????

I never could get one with a reducer to work right, I assumed it was air locked or the water couldn't get to the sensor. maybe install it upside down...

 

I see!!!!!!

 

That thermoswitch you picked out turns on at 190* and off at 175*. What temperature thermostat are you running?

 

185

 

So your 185* thermostat will just start to open at 185* and won't be fully open until 205* but you start the fan at just 190*? And then the fan doesn't turn off until you're 10* below the thermostat's opening point? I think your fan is going to be running a lot.

 

I run 180* stat, have Derale adjustable controller set on at 200* shuts off 190*. The fan don't run much this time of year untill I am sitting still. I had the set sensor when I first did the fan convert; I like the adjustable ones much better for flexability.

 

I have my wiring ran fine now. But now my temp gauge isn't working. I used a thermo stick and kept checking the engine. But the sensor never kicked on the fan. I manually turned it on cause the car was running for almost ten mins. Intake was about 170ish. And heads were 185. The top of my radiator and hose was got really hot. But the whole bottom half of my radiator and lower hose were cold. I assume it's working. But I'm trying to tackle my gauge wiring right now.

 

It's possible that you may have accidentally "dumped" 12V (14V If the engine running) into your temp gauge, when you connected both fan & gauge wires, together.

The suggestion to run the temperature gauge sensor in the upper hose neck, is an excellent idea.
I did the same. Attached photos are two different ones listed on Rock Auto.

 

Basically what I did. It's not hooked up together anymore. Did I damage it ?

 

According to your schematic (and what other members have described), your ignition side supplied +12V to the relay coil, and the thermal switch grounds (-12V) - completing the circuit. So, if you connected together, you ran +12V to the gauge. Most thermostat gauges use a thermister of some type. Most change resistance with temperature - but never reach zero ohms. Some output a voltage proportional to temperature - but can never reach +12V.

 

The wiring issue is fixed like stated above with the new thermostat pic I posted. I'm just trying to figure out why my temp gauge stopped working

 

Richard
I see you have the thermal switch in the intake manifold where the gauge sending goes .. I have the same set up as you . You need to put the gauge sender back in the stock location and put the thermal switch in the thermostat housing. That is where I have mine. As for your fan not at this time of year is it not colder than a well digger backside in Red Bluff now ...

 

I believe I can just drill and tap my housing and put one in it

 

Rich That where I have mine just drill and tap to size