Could someone tell me if I have to change the gem in my 03 gt if the interior and trunk lights don't work. The car has 30,000 miles and has no other problems other than the interior lights not working. I have changed the dome/map light already due to the light prong breaking. I could not find the fuse and when I checked the fuses they all appeared ok.Also I am not sure where the gem is located. I am just wondering if I will have to order this part so when I put the car back on the road for summer it will be ready to go. Thank you in advance for the help

 

Welcome to the forum.

Sorry I can't help as I'm not familiar with the newer Mustangs and have no idea what a " gem" is.

But you could try asking this in the Tech section, the one specific to your year Mustang. Just alot more members in that area. Good luck