Should be separate circuits for the dash lights and the radio. Look for loose/corroded connections on both power and ground wires. I would also check the dash light dimmer control switch. Verify you have power and ground at the radio. When the dash lights go out, verify power at the dash light fuse. It is going to take some detective work to locate the source of the problem.
What are the wire color codes on the tail lights of a 03 jeep grand Cherokee?Read more: What_are_the_wire_color_codes_on_the_tail_lights_of_a_03_jeep_grand_Cherokee.
No>
check your fuses
No.No.
Possible, but doubtfull
Check your fuse. Usually the manufacturer has the dash lights and the tail lights on the same circuit.
YES. The harness is behind the bumper in proximity of the location of the lights.
It should say TAIL for taillights or maybe brake lights.
YES. The harness is behind the bumper in proximity of the location of the lights.
check the fuse
The running lights on the 99 Grand Cherokee are optional they do have a place to put in a fuse inside the engine compartment on most 99 Grand Cherokees. Although does not include the fuse go to a local auto store to get one.
Short