How Does The Discontinued Power Gear 500210 Control Panel Make A Complete Circuit?

Updated 09/08/2025 | Published 10/11/2021

Question:

Hi: My situation is I have levelling jacks controlled by Power Gear 500210 control panel. I know they’re obsolete, but I want to know how the control panel controller is supposed to work before I invest in an upgrade system. As I understand, the hydraulic pump motor solenoid positive from the battery connects to a red wire that supplies power from + side of the battery to the 3 jacks actuator valves and 1 float valve. The colored wires also connect to the jack actuator valves and float valve to provide the grounding - which also connect to the 500210 Power Gear control panel via an 8 pin connector. To actuate each jack the controller grounds - the colored wires connected while the red wire provides the positive side + to each jack actuator valve thereby completing the circuit. Not accounting for the blue wire that connects to the hydraulic pump motor solenoid to acuate the hydraulic pump motor. Current situation, the jack valve-colored wires that provide grounding - for the four valves in 8 pin connectors to the controller are hot +. The black ground wire is connected to the negative side of the battery. If the red wire is disconnected from the solenoid, the colored wires cease to be hot. Questions: 1. How does the controller create a complete circuit? 2. Are the colors wires orange, yellow, green, and brown supposed to provide grounding? 3. Simply grounding the colored wires since they are hot creating a direct short correct? 4. For the 8 pin connector the blue wire connects to the solenoid to acuate the hydraulic pump and the black wire is the ground wire connected to the negative side of the battery?

asked by: Jeff C

Expert Reply:

I found an old wiring diagram for your now discontinued Power Gear 500210 control panel and it really helps show how things are supposed to work.

There is a red wire running to the three jacks, the dump valve, and the float valve from the solenoid. The solenoid then has a power wire run to the controller.

When you press the buttons on the control panel the solenoid opens and sends power to the jacks as needed which is what completes the circuits, and the wires run off getting power not getting ground.

You would not want to ground these power wires or you would get a short and blow the fuses on the back of the controller.

The blue wire you mentioned is the correct power wire running to the controller from the solenoid, and the black wire is the ground to the negative terminal of the battery.

If your system is not working correctly anymore you will need to replace the control panel with the Replacement Lippert Power Gear Manual Leveling Control Kit # LC359259 which is a confirmed replacement for your 500210 control panel.

I included a video review of the # LC359259 for you to take a look at.