Generator wiring question

[jspradlin]

new to the site. don,t know how to post. i have a 2016 north point. prewired for generator. i have three wires from onan cummins, wht. blk. green. 4 wires in the compartment from my box marked generator. wht. green. blk. red. white is common, green is ground. where does the red and black connect to the generator? the generator is running 120 volts but no power to unit. could some please look at their wiring and let me know.

[Bullitt6283]

What is the model number of your generator?

You may have a generator suited for a 30 amp system, and your camper has 50 amp system.

In a 50 amp system, both red and black are 120 volts hot.
If both the red and black are not connected to 120 volts, your transfer switch may not operate.

[Vicr]

You also should have a set of control wires in your trailer to connect to the genset.