Originally Posted by AdnanBatman
i have a cj7 with a 92 4.0 liter engine out of a Cherokee.
i dont know how to hook up the gauge with the engine. i dont know if the switch is mechanical or electric, but the output for the engine is electric. its a sun pro brand, and came in the jeep when i purchased it. The guy i bought it from said i should wire it AFTER the fuze box, so where would i splice into the wire to hook up the gauge. according to the guy, it has been wired from the engine to the fuse box but i don't know if it is for sure. is there a way to test that? and how would i wire it after the fuze box?
thanks to all help!
Did the PO put the 4.0 into your jeep and the Sunpro gauge or did you put the 4.0 in and the jeep already had a Sunpro gauge installed?
To me it sounds as if the PO installed the Sunpro temperature gauge but did not finish the job. He already ran the wire from the sensor through the bulkhead connector to the gauge. The bulkhead connector is sometimes called the fuse box because they are attached to each other. He just never wired up the power which has to go to a fused circuit. preferably one that is switched off with the key.
I would splice it into the power wire to the Oil pressure gauge. That way all the gauges are on the same circuit.
The only way you can find out if the wire is installed through the bulkhead connector is to trace it out by hand or buy one of those network ringers that you attache a transmitter on one side and use a hand receiver to track down were it runs.