TF,

You asked for it, you got it: http://www.wms1.com/forestcity/fores.../pm_4_sol.html

A word of caution, if you are going to try to do this, do not connect the main power leads to the battery until you have verified everything with a continuity tester or volt meter.

I have been using mine for over a year with crimp-on connectors on all the terminal posts and the only problem that I've had was a wire coming loose from the rocker switch.

 

The Warn "contactor" from the A2500 is actually a fork-lift piece.Unfortunately, they want about $125 for this.It seems it will do all that without all the bulk & wiring of the multiple solenoid designs.
Any lift-truck guys out there that can identify this piece & maybe provide a more reasonable source?