I have a 2002 XL7 and the fuse for the dash lights and tail lights keeps blowing. I've changed it three times now - the lights will work for a few days and then the fuse will blow again.

change your dimmer light switch and check the "tail" fuse

the only thing that turns on the reverse light is the nuertral safety switch.

The dash lights and parking lights should be on two different fuses.
You may have a problem with the headlight switch, or something in the harness.

you got a wiring issue that keeps shorting out fuses find that and that should take care of everything else

If the fuse is blowing out it means you have a short cirtuit.possible causes the Light socket, pedal sensor or somewhere along the wiring harness Aires might na chewed you and touching each other

Hi,
Looks like the park light harness got a short circuit.
Check the wire harness leading to the tail light. One of the power wire( usually red wire ) is stripped off the rubber insulation and touches the metal body ground. Check also the tail light connection and bulbs base contact points..
When you found the wire insulate it by using any plastic electrical tape.
Thanks for asking FixYa!

Brake light shorted to ground.

Don't try a higher fuse , it just makes things worse by adding extra burn to the problem.. First make a test lamp with a 21w bulb ( indicator size) .You now have a bulb with two wires attached , insert the "test bulb" across where the fuse should be.
When you switch on the circuit concerned it will glow BRIGHT as it is getting a POS (+) and a NEG (-) ie blowing the fuse (short circuit) in the fuse box and therefore a BRIGHT bulb.
As you disconnect and eliminate or disturb the problem the bulb will immediately glow DULL ( in series contact now) and no longer a short circuit . As you check the circuits the illumination will change and, your on the money ! Let's know how you get on , Good luck

change bulbs check fuse

you have a wire or a light socket grounding out ck were your lights go into the sockets has the car been wrecked any were near the lights if it has thats were you start if not start with your light sockets