Your CRV has amber turn signals? Are you trying to use them or use the brake light filament as turn signals.
The Blue Ox unit in previous post requires a converter on the MH. Verify how the seven pin is wired.
If you are using four wire system in CRV you need to rewire.
Here is link to Roamaster wiring.
RoadmasterDoes your MH have amber turn signals?
Please specify how you are trying to wire.
On a MH with amber turn signals, a combiner to put turn signals onto the red brake lights in 7 pin connector would be required if you are using the brake light filaments on CRV for both brake light and turn signals.