As per John's request on a different thread, I'm posting my winch power interrupt installation on my 04 TJ. John asked to see installation options for both a TJ and a JK. I'm starting a new thread in the fabrication talk section since this is fab work.
I bought the Warn 62132 Power Interrupt Kit which includes the solenoid, battery lead wire, lighted switch, additional wiring and all hardware. The battery lead is 18" long so the solenoid needs to be installed close to the battery. This makes sense since the reason for this safety feature is to eliminate the long, hot lead wire that goes from the battery directly to the front bumper mounted winch. While the switch quality isn't the best, I do like the fact that it is a lighted switch when the switch is in the on position (i.e. winch power on) and not illuminated when the power to the winch is off. Since it is a toggle switch with no on or off indicator, the light is the only way to tell if the winch power is on or off.
I mounted the solenoid in about the only place I could find to mount it on my TJ. I mounted it on the inside of the passenger side fender well. The other option was to mount it on the firewall close to the battery but I had no real space on the firewall due to other aftermarket wires being in the way. I mounted the switch at the bottom of the dash on the passenger side, making sure the location didn't interfere with future removal the bezel for the radio and heater. I created a "Winch Power" label in case someone else needed to operate my winch without me being there. I rerouted the red winch wire between the air filter box and the fuse box, which worked perfectly. I tied the red wire for the lighted switch into the radio red power wire so that it is connected to a key activated wire and not on unless the Jeep's key is in the on position. The switch has a ground wire that I mounted to a metal bracket behind the glove box with self tapping screw. The yellow wire runs from the solenoid to the in cab switch and is the only wire that needs to penetrate the firewall. There is a green ground wire from the solenoid to negative terminal on the battery.
Note: in the pictures below the red starter wire passes next to the solenoid going from the starter to the battery. The picture may be deceiving because it looks like this wire is going to the solenoid, which it isn't. Additional note: to the left of the shifter on the lower dash is where I mounted my switches long ago for my bumper and A pillar mounted light bars. I also labeled them to indicate which switch is for which light bar. They are tri position switches because I have a white and amber light option.
