hello,

I bought the above to use in a 1948 Buick Super with power windows. The voltage system is 6 volt but the power windows are 12 v. I installed the step up converter and when I push the switch to raise I get 12.25 volts at the motor and it works fine. When I press the button to lower I am only getting 3 volts and the motor doesn’t work.

Thoughts??

Thanks, Chester