Hi Martin,
Finally found my notes on the Mustang wiring that I made in case of anything like this happening at a later stage if something stopped working on my Mustang.
This is the circuit board notation:
1/MT = Accelerator pedal stage 45
2/SC = Brake pedal stage 45
3/LBA = Horn switch stage 63
4/BT3W = Light switch stage 72
5/Battery = Right side panel stage 76
6/SPK = Speaker stage 78
7/W1 = Left headlight stage 87
8/W2 = Right headlight stage 87
9/W3 = Left tail light stage 90
10/W4 = Right tail light stage 90
Hopes this helps with your issue.
Regards
delboy271155
(Derek)
COME BACK GUY FAWKES "YOUR COUNTRY NEEDS YOU"