In the back of a Haynes repair manual or autozone.com there you will find online repair manual's
The 1990 Jeep Grand Cherokee power locks wiring diagram can be obtained from most Jeep dealerships. The wiring diagram can also be found at most auto-parts stores.
I don't knw do any of u's knw wt it is
There is an electrical problem with the switch or wiring. Have it checked out/
check the fuse box, could be that easy sorry... they are all on one fuse
PCM, Relays, Power locks, wiring
In a Honda Integra, you can convert manual locks to power locks. You can either purchase a kit and do all the wiring yourself, or you can purchase doors from a junk yard and redo the kit. By purchasing doors, the wiring is already set up.
re word the question
You can find a good nudge in the related link below. CommandoCarAlarms.com
Pick up a "Haynes automotive repair manual" at any local auto parts store (AutoZone, Advanced Auto Parts, Etc.). They have wiring diagrams in the back of the book. Should cost about $15.
Could be fuse. Can also be the switches. Does it fail on both doors or just on one side? The next common problem (difficult to repair) is the wiring from the front of the car has broken where it goes from the frame of the truck into the door. If the ground wire breaks inside this loom you will have the same problem. Get a good wiring diagram and trace it out if possible before tearing into the door(s).
The relay switch for the locks on a 99 Chevy Suburban is located under the driver-side dashboard.
To repair the wiring on the trucks door locks, you will have to find the problem first. Check all of the wires connectors for loose or bad connections, and look for any places in the wiring where the insulation has worn through.