Welcome to the forum!!
you need to go to that escappees site and read up on the Jackolope, its a box specifically designed to convert semi truck to RV wiring with out sending error codes to the CPU on the semi, then on to the dash.
Follow Bobs advise and lurk or join the Escappees HDT forum..
Tell those guys that Bob and Blizz told you to post.
then come back here and tell us all about your rig and your travels.
blizz