I have a '99 Allure and had the same problem. I found RV Cams on the internet and talked with Tim the owner. I bought a Voyager camera and monitor.
When I went to hook them up I had the same problem, wiring and plugs didn't work with the new equipment.
I called Tim and he walked me through the connections and all is good. that was probably 10 years ago.
I would give him a call and see if he can help. Small company and provides great after the sale support. You can reach him at
Tim@rvcams.com
Good luck...