1991 Johnson 40hp wiring diagram

[clightning]

Trying to come up with a wiring diagram to troubleshoot warning horn problem. I contacted a local dealer and they want $10.00 to make a copy out of a book, seems high when you can buy the whole book for approx $25.00. The warning horn has 3 wires, the VRO has 4 wired. Thnaks in advance

 

[clanton]

Re: 1991 Johnson 40hp wiring diagram

Tan wire from VRO, temp sensor, power pack, and oil tank connected together in engine harness. Engine harness connected to control by single tan wire to warning horn. Warning horn has two other wires black to ground, purple to hot switch termial when key is on. There is a blocker diode in the engine harness between the power pack, temp sensor and the VRO pump, oil tank. The logic of no oil, low oil, or overheat is in the horn.