1-my8x6x3-light power box under my bed is humming anoyingly. 2-are all manual trans toads towable? Wally Vancouver Island

#1 You probably have the old style converter. Solution is replace it.

#2 All manuals are not towable. Check the owners manual.

As far as towing, click on Application Guide at www.remcotowing.com for a list of about every make/model out there... and what equipment (if any) you will need to tow 4-down.

Your 8X6X3 box is probably your shore power transfer relay, Mine hummed badly and found the cover a bit loose. Tightened all up and it was better. Now my Xantrex RS3000 inverter/converter (under the bed beside the transfer relay) makes more noise even when on shore power and battery float.