No lights

[bz393]

Just bought an 87 GT with t-tops for a daily driver so I can put the 393 in my 92 GT and i cant get the front parking lights or ANY of the rear lights to work in my
87. All though the head lights and fog lights work. I have all ready put in a new head light switch and replaced all fuses that were bad. Now what !?!?!?!?!?

 

[jrichker]

Time to get the voltmeter out and go through the wiring diagrams.

AutoZone wiring diagrams

http://www.autozone.com/servlet/UiB..._us/0900823d/80/16/71/3c/0900823d8016713c.jsp for 79-88 model Mustangs

http://www.autozone.com/servlet/UiB..._us/0900823d/80/19/59/5a/0900823d8019595a.jsp for 89-93 model Mustangs

http://www.autozone.com/servlet/UiB..._us/0900823d/80/1d/db/3c/0900823d801ddb3c.jsp for 94-98 model Mustangs

 

[HISSIN50]

In addition, the parking light wire should be brown under the dash (helpful when you start chasing the wires fom the headlight switch out). Because you replaced the headlight switch does not mean it's electrical connector was in good shape. I'd start there.

Good luck.