Welcome to the forum.
Don't let the grouchy old men scare you off.
I know this is your first post.
While I am not familiar with your rig, there are folks here who can help you. We spend an inordinate amount of effort helping users who should have been helped by the dealer they bought their rig from.
Sometimes a photo posted can help us zero in on what you need.
The FAQ section has helpful hints on how to use the forum to search for answers on how to do stuff on the board, like post photos, and find information like manuals for your equipment.
Most of all,
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW