Sold my 88's (had 2, one yours, and one Comanche)
sold in 2000 year, ran hard and over 250k miles each.
the answer is the same,as all cars, for sure..
you have an added relay for lights.(aux)
this relay prevents overloading the cars H/L wiring and fusing
so there are 2 parts, there, a relay and a fuse inline added.
the fuses are are for fire safety. (the battery can do 500+ amps ok?)
Relay mounted somewhere, and...
the coil pin 1, ground. car body ground is ok.
then the relay coil 2 wire to the H/L low beam wire,or tail light wire using and inline 5amp fuse , to protect that very expensive H?L switch in that jeep,
tail lamp wire also means PARKING lamps. TODAY.
Contactors are those switch part of relay not the coil.
then contactor, power in pin to one more fuse, 15amp to battery +
and each contactor out to your plow lights. (load)
the when H/L are on the relay closes and the Plow lights work
if you google this there are zillions of wiring diagrams for this
even 4wd offroad light bars wired the same way.
there you go, how to wire AUX lights on any vehicle.
SOURCE: 1996 jeep cherokee sport.
If it's a lighted switch, you should have 3 terminal connections on it. One for the "ignition on" wire (from your fuse box). One going to the fog lights to turn them on when you flip the switch and one ground for the switch light to work. If your switch doesn't light, you should only have 2 terminal connections (no ground).
Find an "ignition on" plug on your fuse panel. It is only hot when you turn your ignition to the on position (not crank position). With your keys out, it should not have any power to it. Hook your "hot" wire from fuse panel to switch, take your keys out of the ignition first to be safe. Now hook the other wire from the switch to the "hot" on your fog lights. You will have to find a pass through rubber grommet on your firewall to go through. Use a clothes hanger to help fish it through. Now ground your fog lights to a grounding screw somewhere in the engine bay. There should be a few you can use, possibly one of the bolts that hold the front shroud on. Make sure it's a metal surface and use sandpaper to scrape off paint to get a metal to metal contact. Cover area with petrolium jelly to ward off rust. If your switch is lighted, hook to ground wire on fuse panel. Test with ignition on. If it doesn't come on, check your grounds again.
SOURCE: firing order 1988 Jeep Cherokee Pioneer
assuming you have a 4.0 l6, order is 153624. #1 on cap is at about 4 o'clock when viewed from r/s fender straight on. next time, take wires off one at a time!!!
SOURCE: i need a wiring diagram for 2002 jeep grand
Also try http://www.etrailer.com/faq-wiring.aspx. They have easy to follow directions and color codes. Plus you can order anything you might need. Hope this helps.
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