nasirazizkwt

Hi , All

I recently buy Cherokee 1997 XJ, I notice when I switch on headlight at the night and open the door the Radio disconnect for few second front door or rear door same thing , and also flash light hazard not working and when I switch it on the right or lift signal light not working but if I switch it off the signal light is working and also if the door open and light on the lock for door not working.

any idea what is the reason for this issue,

Thanks

Nasir Aziz

dave1123

Check and refresh all your grounds and clean any connectors you can find. Look at the door wiring bundles for broken wires in the flexible sections between the doors and the body.

I suggest installing a headlight harness upgrade to get the headlight load off the switch and putting the load thru 2 relays. It makes the headlights much brighter and removes the load from the rest of the system.

nasirazizkwt

Thanks Dave for your suggestion, I will try my best and inform you soon.

OutbackOz

clean all your main grounds they live where your dip stick bolts on to the engine

fb97xj1

Here are the mains. Pics come from CCken.

shane carrell

So i have no idea where the ground wire goes from the headlight switch. I know i have a bad ground cus i switch on the lights and the fuse pops and i dont got running lights for the rear or dash lights. But i got front headlights My issue is where is the ground go to for that switch .... Thanks

97grand4.0

No, an open ground won't cause your fuse to pop. You have another issue. I would start by pulling the headlight switch and examining it and the connector. Probably melted.

dave1123

Look at the wiring in the rear cargo area;

shane carrell

Lets start over i have a 1987 cherokee
I have no rear running lights/dash lights
I have replaced the fuse keeps blowing
I have disconnected the rear lights to see if that was it nope.
Replaced the switch
Things i have not done replaced the wire harness
I have researched some ans found on youtube that if you got no rear running lights and no dash lights you got a bad ground. So that is my question where is the ground located at black wire for the light switch thank you.
And any advice is much helped thanks or redirect to another thread.

97grand4.0

Simple fact ...You do NOT have a bad ground. let me repeat again. This goes for any circuit.
If you are blowing a fuse, it isn't because of a bad ground. A bad ground would create an Open circuit. What you have is a Short circuit, that is what blows the fuse. You haver a power wire or source. grounding out, such as in a damaged fuse block or some hot wire grounding out, The fuse is a current limiting device to protect the circuit in just such a case, from unlimited current from the battery, which could light up the wires and burn down the jeep.

So you are looking for a power wire or source that is grounding out, not a ground wire that is making a bad connection. Like a pinched hot wire to the frame or a badly corroded fuse block or a bad bunch of wires shorting together behind the rear light. Pretty common from road salt and moisture. If the ground wasn't making good connection yes you would have no lights, but you wouldn't be blowing the fuse.
I would start by questioning, WHEN does the fuse blow. With all the lights off incl brakes, headlights, ..everything off, does the fuse blow immediately? If not, when DOES it blow? When parking lights are on? Brake? Etc.

What is pretty common is the rear harness behind both lights gets totally corroded and the wires actually break off and dangle and hit a ground. You end up chopping off all the wires both sides of the connector and re connecting them without the connector using wire nuts or butt splice connectors.

What is odd here is that you say the dash lights also seem to be involved, but, I think you may have 2 problems. One the lights and 2 the dash lights. I would start taking another look at the headlight switch connector, since that is where both the dash and parking light ckts come together, then by probing the fuse cavities in the fuse block with the fuses pulled. then with the battery disconnected I would use an Ohm meter to see if you have a short to ground on the other side of that fuse. A short to ground would look like 0 ohms or pretty close, on your meter.