[graphictees]

Thank you so much for the reply. I'm still a little confused and don't want to short anything. The original Reducer only had 3 wires. The new reducer has 4 wires. The original Yellow wire had a fuse on it and when I removed that fuse, the lights would go out. Everything else was working. This yellow wire was on the Big post on the Solenoid. So you said that would be the 48v Positive?

This is a picture of the new Reducer with 4 wires. If I am understanding you correctly:

1) the Red wire on the new reducer be the same as the yellow wire on the old one and this would hook up to the big post on the Solenoid with a fuse?

2) the 12v Black Wire should go to the Negative small terminal on the Solenoid

3) the Yellow wire on the new reducer should hook up to the red wire on the Harness

4) the 48v Black wire should go to a Negative post on one of the batteries? Would that be the last negative post in the series?

Is this correct?