HD/MHD Ground Plug - JL Audio HD and MHD Amplifier Power Ground Remote Plug

Amplfier power and ground remote plug for JL Audio HD and MHD amps This plug is compatible with HD600/4, MHD600/4, HD900/5, MHD900/5 and older model HD750/1 and MHD750/1. To tell if your 750/1 amplifier is compatible with this, please note two things. First of all the serial number on the bottom of the amplifier (HD750/1) should be below the following number: 108034000001 If you have an MHD750/1, your serial number should be below the following number: 153034000001 Also, please note the location in which the power plug goes into. If it has two small screws at either side (left and right) then you have the older model. If you do NOT have two screws on either side of the plug, and there are just two blank circles instead, then you have the NEW model and you need HD PLUG PWR2 instead.