Brake Size

[lckelly26]

I'm new to the forums and could really use some help.
I recently purchased a 2004 Salem 32BHSS 5th wheel camper. I towed it initially with my brother-n-laws F250 with a known good brake controller and the brake controller showed OL and a short while towing. The Trailer brakes didn't work. I then towed it to camp with my F250 and the brakes didn't work. I metered the plug pins and know that i'm getting voltage to the axles but I didn't have the tools at camp to troubleshoot any further.
I want to change the entire brake hubs on both axles but not sure what size need.
Does anyone know if the 32BHSS 5th wheel has 12 x 2 or 10 x 2-1/4 brakes. I think it would be time and cost effective if I just showed up at camp with what I need and the tools to replace them.
Any additional ideas would be helpful

[donniedu]

Jack it up and look. Most brake drums have size molded into them. BTW, brake size is based on axle capacity also.

[Bama Rambler]

Does it have 5 or 6 lugs?
If it's 6 lugs, they're 12x2.

[lckelly26]

I wish I could but the camper is 200 miles away. I was hoping to get the brakes in hand before I went back to the camp.