Got it working thanks! Ended up removing the wood panel beneath the unit, i bent the metal away from the head unit so I can remove the unit in the future through the front (as I don't have those special keys) I don't really move the trailer so it doesn't bother me that it's not locked into place. It ended up being a 7a buss fuse, I found a variety pack at the local walmart but it's 7.5 a (I figure that's close enough
) Anyway the panel was held in place with staples and had a finishing trim. I figure i'll reattach the panel with pretty upholstery nails to give it a nice look and also the wide head will give me the ability to remove the nails and reuse them if I have to take the panel down in the future. Thanks for all your help!