Hi ! Welcome to IRV2! We're sure glad you joined us!
Are you sure that the polarity is correct on the telephone-type cable that you installed? Some installations require the connections to be straight through, and others the plugs are reversed on each end. If you still have the old cable you can look at the two connectors and see how they are wired.
Good luck, happy trails, and God bless!
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD