Quote:
Originally Posted by Tcoat
Also as I said the standard colour system is frequently pitched out in cars.
You wire green as ground on what ever this is from you are in for a rude shock (no pun intended).
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Okay, wow...I'm smiling big-time. You show a Lucas chart. Years ago, I owned a '57 MGA with Lucas Electricals. There is a reason Lucas was called the Prince Of Darkness. Like I said, in agreement with an earlier post, the best way to tell which is the positive wire is with a multimeter. Check between two wires and when the switch is on figure out which two wires give you a reading of approximately positive 12V. That should show you which is the + wire and which is the - wire. Ground shouldn't even be an issue.