Lights on my xj

[gunslinger]

Lost marker lights because I put a led on the tag light plug.which caused all my marker lights to go out on the drivers side. Checked the fuses didn't see any blowen fuses. Help.

[4.3LXJ]

I would be looking at where you got into that wiring first. Start there and check for power and grounds for the lights

[Philxj4L]

Does the Jeep have any 'bulb out' warming lights ?
If it does, you may need to fit 'load resistors' to fool the system. LEDs draw so little power that they can cause 'bulb out' warning lights to trigger, or the bulbs not to work, or cause issues with the loop it's fitted to. :)