I have a onan genset generator model #3.0AJ 1R/16017S serial # L830689411. It is wired wrond to my motor home it runs good but no electricity coming from generator to motor home, which is a 1982 coachmen. I could use a wiring diagram for the generator

The wiring diagram for the generator is pretty simple. You have three wires coming out, White/Green/Black. The black is the Hot, White is neutral, and green is ground. If the generator is running and you do not have power at the black wire, the problem is in the generator. Check the circuit breaker on the generator for OK. Make sure that power is passing through it.

There is a transfer switch that switches from gen power to shore power when you activate one source or the other. That's where you need to start. It automatically should switch to one of the sources when you plug in or start the gen.

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First you have to check(visuel & measure) on the excitation system ( thats include the rotor ), when you have problem there, you won't get voltage on the generator(stator)