So I checked the ground and all of them have the same resistants? I might need the wiring diagram and maybe how to fix it. I'm a newbie at this stuff and I'm learning as I go. Any detail or step by step help would be awesome. Thanks

 

Bump please let me know ab the wiring diagram got to fix it I have to other way to work and now I have other problems with it lol so I would like to at least figure something out. What color is the ground for the speed sensor/ speedo?? And those other 2 wires that are grounds what are those for??? Having other electric issues and just want to maybe replace those when I replace the other one while I'm there

 

http://www.phelpsclan.com/Jeep/jeep_speedo_wiring.html
Here's a link to the wiring diagram of the instrument cluster for the Jeep Cherokee, 1993 up through (I think) 1998.

I have highlighted in yellow the ground path from the three instruments in the cluster that are all dead on your Jeep. The ground returns join together on the printed circuit board on the cluster and "exit" from the cluster through Pin B2. Everything else on the cluster goes to ground through Pin A3, which is why some of the instruments work and some of them don't.

The wire from pin B2 goes down into the engine area and attaches to the engine block with a ring terminal, along with two other ground wires, at the point shown near the oil dipstick, in the photo posted by RadioFlyer. The B2 wire is the one that is stretched tight in the photos. It's because it was designed to be too short, and has to be stretched tight to reach the bolt, that it breaks from vibration in some Jeeps -- mine, yours, and RadioFlyer's included.

There is an easy way you can check to see if this is the problem (which I am sure it is, given the symptoms.) The easiest is simply to remove the nut and lift the ring terminal off the bolt that it's attached to. Physically inspect the three wires. The B2 wire probably will fall apart from the ring terminal connector when you wiggle it, if it's not already completely broken.

To fix the problem you'll have to solder a short length of wire (a couple of inches) to the broken-off end of the B2 wire. Wrap the joint with electrical tape to protect it. Solder a new ring terminal of the appropriate size on the end of the new wire. Then put BOTH the old ring terminal (still with two wires attached) and the new ring terminal attached to the B2 wire) back on the threaded stud on the engine block and tighten the nut back down securely. Your speedo, gas gauge, tach, and Low Fuel Warning light should all be restored to normal.

You wrote earlier that the resistance was the same on all three wires. Not sure what you were measuring across. If you want to use your ohmmeter to check this out, what you need to do is to detach the cable from the instrument cluster, put one ohmmeter probe on Pin B2 on the cable, and the other probe on a clean, unpainted part of the engine block. The resistance should be zero ohms. It will be either zero or infinite resistance. If it's zero, the problem is in or around the connector. If it's infinite, you have a broken ground wire down at the engine block, as we have discussed above.

Hope this helps.

Lew

 

It helps a lot I'm going to try and do that tonight problem is is that when I change the gauge cluster out now my gas and tach work everything does except for the speedo and the odometer???? Weird! I change the speed sensor and nothing!! Check fuses but don't exactly know where the relays are for these gauges if there are any. Regardless your info and diagram will be with me for a while being that a jeep is nothing but an electric mess lol. So I will clean the grounds on the block and see if that does anything but even if it doesn't it needs to be cleaned so thank you. If you have any idea about the speedo and tach not working let me know. And new problem now brake lights turn signals and hazards don't work and there is a short in the head light switch cuz the flicker on an off and I have to turn them on the off to get them to work and sometimes it doesn't work??? Any ideas

 

I do not see the diagram

 

I’m having the same issue but cannot locate the ground at all!

 

Knowing what year you have would help. If it's an older Renix, start with http://cruiser54.com/?p=110 and then go do all Cruisers tips.

 

Do you guys realize the original posts is +10 years old?

 

Yes I’ve seen the thread is over 10 years old but It’s the first that’s come up! My car is a 1996 xj - but it’s a diesel RHD. Every bit of research always leads me to the 4.0l. I keep reading about the 3 grounds that go onto the engine block, but the diesel doesn’t seem to have these.

 

Try starting a new thread, list year and model with a good description of your problem. Someone will direct to the diagram. One o the problems I have experienced is the plugs where the instrument cluster connects to the dash. There were recalls and a connector change associated with this issue.