Question about 2000 Jeep Cherokee
So, pretty much you have everything plugged in except the grounding. Ground is shared throughout the entire body. The thick black cable from the battery can be connected to the engine block. usually there is a threaded stand off somewhere on the side of the engine. You also need a smaller ground cable connected from the battery to the right front fender. There should be a ground strap that goes from the cylinder head to the firewall and two or three ground wires connecting the computer to the left fender.
I generally compliment the system by using a ten gauge or larger wire and run it from the battery ground terminal to the right fender (not cutting the wire but removing insulation, forming a loop, using a short self tapping screw and washer, then connecting it to the firewall at both corners, then up to the computer grounds, then to the cross brace on the radiator then to the engine block. (all connections made as the first so the wire remains as a continuous run...one exception being that the corner at the firewall gets another wire attached with an end loop running through the firewall and attached to the lower rail of the dash frame.) Reason? poor grounding is the primary reason many electronic components fail, and one of the most neglected areas of the entire system.
Doing what I outlined ensures that there is always a good alternative ground path that is largely unaffected by corrosion at fender connections etc,
Set your system up as I said at the start but consider going further later. I'd also consider using a heavier gauge positive lead than the stock one which is pathetically thin (I use 00 welding cable for that but you don't need to go that far, but the thicker the wire the less the resistance)
Posted on Feb 03, 2010
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Posted on Jan 02, 2017
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