Hey guys so I have this boat with an early 70's mercruiser 140hp 3.0L and last weekend when I was on the lake just cruising the motor just suddenly shut down. the motor would turn over but would not fire so when I finally got back to land after being towed in I started taking a look at it and found I was not getting spark after some investigating I found that my ignition wiring harness was to blame since the motor is so old it's very hard to find the right replacement...hell it's hard to find anything for this boat. I was just wondering is it possible to make a homemade harness and if so are there any how to videos out there
