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While it's difficult to determine from your picture, you can at least get an idea of their functions by the following tests:

  • if the wire is brown, it's (probably) a ground
  • if not, then connect a voltmeter to each wire in turn to see if it's hot all the time. 
  • if so, it's probably a lighting function, as on a '68 the lights all work even with the ignition off, but not much else does.
  • if not, then turn the ignition on and see if it's hot. 
  • if not, then it's probably a sender wire--temp, oil pressure.
  • if so, leave the voltmeter connected, and remove fuses one by one 'till the meter reads zero.  Then consult the fuse list for that fuse and eliminate the possibilities one by one.  With only six fuses on your car, that should be a fairly easy set of tests.

mike

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What year is your car?

Solid green wires are generally switched 12V (unfused).

Brown wires are always ground.

Solid white usually go to lights or alternator DF.

Solid blue usually from the alternator/ voltage regulator D+.

Hard to see from your picture, but they may also be the diagnostic plug wires?

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10 hours ago, John76 said:

What year is your car?

Solid green wires are generally switched 12V (unfused).

Brown wires are always ground.

Solid white usually go to lights or alternator DF.

Solid blue usually from the alternator/ voltage regulator D+.

Hard to see from your picture, but they may also be the diagnostic plug wires?

My car is a 1968 built in October of 1967

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