I removed a second switch from a Jetta, as these provide a dual stage switch. Fan is not coming on and engine is overheating? If you're rusty or new to this automotive element, here's a short rundown of how radiator … Grey wire is connected to the thermostat (sending unit) terminal with the blue ring crimp connector provided. They could've blamed our radiator and fan … To ensure our content is … You will notice, I also fitted a rubber seal to the tops and side of the radiator to make sure all the air flowed thru the core. Jul 31, 2018 | Cooling System Mini Cooper fans are meant to boost the circulation of air around the radiator … And worse still, in stationary traffic, when … You will need 3 scotch lock connectors, a toggle switch[if wanting to turn the fan on/off manually], or a 4 pin relay [if wanting to have the fan constantly on when the vehicle is on and turn off when the vehicle turns off] and at least 4 female spade connectors, and a ring connector with a self tapping screw, and some insulated wire. Radiator temperature switch is located on radiator outlet tank, above lower radiator hose. 2. After Replacing Water Pump And Timing Belt, Engine... Cooling Fan Not Comeing On. How do you wire the fan to stay on all the time. To improve this you can fit an electric fan(s) to the radiator. Adding a manual switch to an electric radiator fan is an economical way of keeping your car cool and in good condition. First turn the key on and look at the two fan fuses. If fan does not operate, replace radiator … Now it is just a case of wiring the fan(s) up. Hi, I have a 95 Pontiac Grand Prix with a 3100 V6. Use the test light to pierce the insulation of those wires and see if the relays turn on and activate the fan at different speeds. Step 1 Locate the positive and negative wires on the cooling fan. Why Does My Mini Cooper Fan Stay On When I Turn Off The Engine? core Of the radiator where there is a metal lip that is approximately 1/4" to 3/8". Decided to wire up a switch to turn on fan when I wanted. The first thing needed was a way of fitting the switch and the switch itself, so at the local scrap yard, you need to find a VW of some sort with a broken radiator end tank, there will be loads, as they are just plastic and tend to be broken in any frontal impacts. My Thermostat opens at 78�C so I chose the Jetta switch that turns on at 95�C, off at 81�C, stage two turns on at 102�C and off at 91�C. Suggested Electric Fan Wiring Diagrams Converting a 12 … Thursday, December 19th, 2019 AT 11:17 AM. You can pick a hot wire (switched ignition), run from source to a switch in cabin, then to fan. As can be seem above the original set-up on the coup� wasn't ideal as far as surrounds go, it was a fan off a Rover mounted about 10mm back from the radiator. What is the issue you are having? Touch the light to the tabs on top of the fuses. Ground fan to block or chassis. Radiator fan might wait even longer for the coolant to reach a certain temperature. This circuit works using the ECT to tell the control module when and how fast the fan should run. 16-18 GA: ALL OTHERS. This was done using plumbing flux, solder and a propane torch. Merch! This gets 1 fan to come on when the AC is turned on and the pressure is getting up there, and the other one to turn on when the temp hits 190. 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