Help Please electrical or fuse problem 90 Cherokee

http://www.autozone.com/autozone/parts/Duralast-Stoplight-Switch/1991-Jeep-Cherokee-2WD/_/N-itx66Z9cias?itemIdentifier=185090_0_0_5520 Click on link to stop light switch.

At a guess, check out the fuses.

Running for five minutes sounds like something other than a security system problem (usually shuts off much earlier) but if that has been compromised it needs to be put back together or the trigger wire from the drivers door lock needs to be grounded.
I'd look to the throttle position sensor, map sensor, crank position sensor or the ballast resistor on the drivers fender. You need to do tests on those items as all influence the fuel management system after warm up. Test when it is cold and after it shuts off so you don't mistake a part malfunction only when hot. Hands on testing is the ONLY way to determine accurately exactly what is happening there. Anything else is an educated guess!!!

this fuse is of high rate and must be found under the hood and most probably not in the cockpit.

shold be in fuse box or under the hood in fuse panel

Check in the Fuse Block, the cavity 2, fuse 30 Amp c/Brkr (Section (8W Page 7)

More details about electrical system for ZJ Grand Cherokee, you can find here: ZJ-Secc-8W-Wiring-Diagrams

I hope help you with this (rated this help). Good luck.

you can test your signal wire to the starter by having someone turn the key to start while you put a test light on the signal wire at the stater.If there is no signal on the light then there is a problem with the sending wire from the ignition.

This info about "repair workshop" can be help you...
- ZJ-Secc-8R-Power-Seats
- ZJ-Secc-8W-Wiring-Diagrams (Power Seats - Page 8W-128 and next)

Good luck!!!

Check your fuse box.....then lok for a possible short if the fuse is okay

You have a short. I had a similar problem with my 1990 Jeep limited and the short was in the rear where the wires go into the rear lift gate. Access the wire harnesses behind the rear left panel and try unplugging connectors to trace which circuit is shorting out. You might need to run some new wires to replace any that might be worn and have exposed wiring which is causing fuses to blow. As with any electrical problem you MUST be methodical and patient or have enough cash to pay a shop to track down your problem and then tell you 20 other things you really don't need fixed. GL!