Thanks for the replies.
I agree that a multimeter is a good tool, and I have a few including several of the HF freebie ones. In this case though it won't help me. I know the polarity of my trailer wiring, black is positive and white is negative. This is contrary to most 12v systems but it's the way fleetwood decided to do it. The problem Im having is with the polarity expected at the accessory ( the current limiter) which is unpowered (until I connect it to the trailer, which is something I don't want to do ). It uses red and black like most 12v systems, so I don't know if they designed it to work with fleetwood ( black positive) or like any other 12v system ( black negative)
I'm waiting on a response from the manufacturer.
A current limiter is different than a fuse. While a fuse is meant to protect the circuit by blowing or opening the circuit when a specified amperage is exceeded, the current limiter is meant to stop the motor when it hits its limits. When an electric motor stalls, it draws more current. This box senses that current draw and stops the motor. So it prevents the operator from overdriving the top either up or down preventing damage to the lift mechanism.
Thanks for responding!!
