Trailer lift shutters when going up, blows breaker

[cal]

Originally Posted by Mike Pearson

The 12 v system will require a very high amperage draw. Even the smallest issue with the wiring can cause problems. Have you checked the battery to see if it is up to the task. Some of those lifts have a capacitor in the motor to help with start up. Check the voltage with the motor in operation to see if there is a significant voltage drop. You might also replace the breaker. They can go bad when they are overloaded

The batteries check good they are about 3 years old, and there is a tender on them 24/7. I have ordered a breaker to replace the one on it just to see if it is bad.
I plan to check voltage drop tonight when I get home.

Thanks again
Cal
SST HR 1177

[Bill Bogues]

Make sure pump motor is grounded good. I had to run a separate ground wire from the pump to the negative side of the battery to make the lift go up and down smooth.