1975 Mercruiser 165 help

xprslane

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Richmond Virginia
Greetings. I have a 1975 Angler with the inline 6. The engine wiring harness was butchered, so I bought a used but in great condition harness. The issue I am having is that the previous owner did not hook all of the wires up from the old harness when he reinstalled the engine. I have everything connected except for the Oil Pressure sending unit and the ignition coil. Can someone tell me what color the wires are going to these parts? I did manage to fire the engine by jumping the Bat+ to the + side of the coil. I know, I know. This is not an advisable move and I let it run for approximately 7 seconds before shutting it down. Just had to make sure I was on the right track with the connections I had already done.

Thanks for any help you can provide.