Question about Oldsmobile 442
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Posted on Jan 02, 2017
On older cars like yours, there are no modules to burn out. therefore, you can use an ohmeter or continuity tester to determine the function of each wire coming from the switch, then energizing each wire in the main harness, to determine which is which there, then matching the proper wires and connecting them. worst you can do to it while testing is to just blow a few fuses along the way, as long as you use the "touch" method and don't make any solid connections while doing tests. Even when the signal switch was an "in stock" part, GM had an adapter harness to mate most together when doing a replacement. It may get a bit complicated doing this but if you write down each result as you go through it it's likely faster than trying to find a diagram. If you have the old connectors in place and they weren't cut off and lost, it shouldn't be too difficult.
Posted on Sep 29, 2009
Haynes or Chilton manual should have the wiring diagrams. Your local library might have the right repair manual where you could make copies of the wiring.
No such thing as a colored diagram, but any wiring diagram would have all the wires color-coded.
Good luck. The wiring on your '68 would be super-simple compared to today's vehicles.
Posted on Nov 10, 2011
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