Too Tall

I had a friend come help me figure it out. You use the thermoswitch on the radiator that runs the fan control module, mine has 3 terminal stacked, I bridged two and the fan comes on. It's low amperage do i done need to use a relay for the switch.

By the way, I do have the Bentley manual, I just don't trust my ability to decipher electronic schematics very well. I've already managed to kill my temp gauge and cant fix it, and I'd like to avoid frying anything else.

I did a search for radiator fan switch, I'm looking to wire in a manual switch so I can turn the fan on high in traffic. I live in southern Idaho and we get temps in the high 100*F. My rout home is in a lot of stop and go traffic and I noticed last year my temps were a little higher than I like. The fan still comes on like it should, but I'd rather give the relay a break and just have it on for the times when I'm not moving. Has someone posted on this topic and I just couldn't find it? Thanks.

It was working before, but I accidentally hooked up the AC control plug and the engine temp plug backwards, after that the temp gauge refuse to work. The AC doesn't work at all in my car so I'm not worried about that.

Yeah I have 3, the blue 4-pin is the equivalent to the yellow one that you guys are talking about, the blue 2 pin is for the ECU because my car started acting funny when I unplugged it while it was running, and the air-con is the brown one. I had a friend come over and sit in the car while it was running and I unplugged the blue / yellow plug and grounded out the pins to see if the gauge would move and it didn't. So I'm thinking either the gauge is busted or there's something in the wiring gone bad.

The blue one with 4 pins.

The send unit to the temp gauge quit working, installed a new sensor, still doesn't register. I'm still trying to figure out if it's the gauge it's self or something in the wiring, I'm going to try grounding out the contacts and see if the gauge moves. But I need to be able to drive the car until I can figure out what the hell is going on. Is not having that sensor working going to cause the engine harm? The fan still comes on when I'm at a stop light. Also, how hot does the intake manifold usually get after driving, cars been in the garage with the hood open for an hour and it's still hot enough I can't leave my hand on it long.

I appreciate the help!

Thank you I will do that

I should have been more specific, original as possible in the way it looks, but not runs.

I have never herd of a stand alone, but now you have my interest. Where do I get one? I'm always willing to pay more for quality and reliability, grandad always said you get what you pay for.

Thank you for the link, I'm a first time owner and I'm trying to restore it as close to original as possible. I'm trying to find as many reliable sources as I can.

Sorry, that is kind of important. VR6.

My current wiring harness is starting to show it's age, wires are ststarting to corrode, and some are exposed. Is the harness off a Passat or golf compatible with the Corrado? I want to replace all the wires, radiator fan plug, engine grounding, ect. I want to wrap all of them and clean up my engine bay.

Going to paw through the Bentley and see what resistance the plug needs. You guys are lucky you don't have to deal with EGR, where I live they have very strick emission laws.