'76 XJS 5.7 SBC conversion. My ignition switch has failed me for the last time. It is coming apart and is un-repairable. I looked for replacements and can only find one for $300. Not happening. I want to make my own using switches but don't know what the wires are going to the ignition switch. There are six total wires: white, white pink, white yellow, brown (14 GA), brown (12 GA), brown red. Can anyone tell me where these wires go?

 

This should help a bit;








On the XJS, Black wires are usually Ground/Earth and Brown wires are B+. Using the chart below and can figure out the colors codes for all of the wires;

Example - WY = White/Yellow

N = Brown
B = Black
W = White
K = Pink
G = Green
R = Red
Y = Yellow
O = Orange
S = Slate (Grey)
L = Light (e.g. Light Blue, Light Green etc.)
P = Purple
U = Blue


Mark

 

PERFECT! I could not have asked for anything better! Do you happen to know where the "Ignition Protection Relay" is located?

 

On the passenger side of the car, below the glove box is a door you can remove to access the relays.

See the chart below. The IPR relay is #4 on the "A" relay panel.