1999 Mustang V6 Convertible- No Courtesy Lights when door is open

Matts1999 · Jul 31, 2016

Hi everyone i'm new here i have a 1999 ford mustang v6 convertible and i can not get the rearview mirror lights to turn on when the door is open or if i turn the headlight switch knob all the way to the left to where it clicks, when i do that i hear the relay click in i belive the gem module but the courtesy lights in the mirror still dont light up, i verified that the black/white stripe wire has 12v no matter if the door is open or closed, the map lights work fine if you push the button. i tried another GEM module still no difference.

Thanks

Matt

Frank.JD.Perez · Jul 31, 2016

[MENTION=11896]ttocs[/MENTION]

ttocs · Jul 31, 2016

testing for voltage at the bulb socket is a good start. Have you checked any fuses? Start there first and don't bother with the manual it takes less time to pull/inspect each fuse then it does to dig out your manual. Don't forget the fuses under the hood.

Matts1999 · Aug 1, 2016

ttocs said:
testing for voltage at the bulb socket is a good start. Have you checked any fuses? Start there first and don't bother with the manual it takes less time to pull/inspect each fuse then it does to dig out your manual. Don't forget the fuses under the hood.

Did more testing i checked for voltage at the passenger side door switch, niether wire on the door switch connector has voltage, though when i used a jumper wire and connected the 2 wires together i hear the relay click inside the gem module still no courtesy lights. Bulbs are fine in the mirror because they work when used as map lights, visor lights and trunk lights also work.