Just picked up a new to me 1977 2600 diesel, with a bad ignition switch. The current one is a automotive style switch. Bought a correct 2600 switch. I figured out my hot going to #1 and starter relay going to #4 on the switch. Then I have a wire (brown) coming off the alternator that I have no ideal where it goes? Also two factory wires a white/ red strip and a white/blue strip that must have went to the original switch? I have a 65-75 service manual in pdf but could not find any wiring diagrams.
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