Can't believe I have owned my exports for two years now and have yet to wire them up lol... I have started to get a game plan together to do this though and my plan is to just use the factory 4 pin plug and just add a single one pin connector to both tail lights. Anyone else that has wired in exports care to share their method?
Here is my schematic I will try to follow. Only thing still up in the air is whether I want to make all three tail lights function as brake lights or leave just the standard two outer bulbs as brake lights.
Going over it in my head and reviewing some of the writeups online I think it'll take only two wires being modified to work, the brake/turn signal wire to the factory tail lights and the third brake light wiring. My plan is as follows:
(1) Tap into the signal wire for the third brake light and run a lead to both tail lights
(2) Cut the factory turn signal/brake light wire for each tail light on the car body side of the harness.
(3) Connect the third brake light signal lead from step 1 to the newly cut turn signal/brake light wire so that the third brake light signal wire now goes into the tail light plug
(4) Run the factory turn signal/brake light lead that use to go to the factory 4 pin connector to it's own single pin connector. This wire will signal the amber turn signal bulb in the export light.
(5) Add in an extra bulb for the amber turn signal and connect its ground lead to the other tail light bulbs ground leads. Run the signal lead out to the newly added single pin connector.
(6) To make the amber turn signal bulb only operate for the turn signal indicator and not for the brake lights you need to cut the signal wire under the dash. From what I have read there are two red wires with green stripes, one for the main brake lights and the other for the center brake light. You want to cut the one for the main brake lights since you won't need this brake light feed anymore, since the light will now only act as a turn signal
(7) Last will be replacing the flasher unit with one for LED bulbs so to slow down the flash speed.
Here is a good reference writeup that I used.
http://www.fordvschevy.com/mods/mustang_eurostyle_taillight.html I will be adding pictures and more details in the coming weeks when I complete the install.