Slowly getting the little electrical things added and changed some. Lower right corner is the dual voltmeter. It uses key-on switched ground to power up with ignition switch. I found this mostly good, but I'd end up turning on the ignition to check battery voltages when I wasn't gonna be using the machine, and that of course skews the reading for the main battery as it's loaded - I want no load voltage. The little black momentary push button switch, shown below the meter, applies a ground to the key-switch ground terminal of the meter, turning it on as long as the button is held down. Still works with key-on, of course.
The plastic panel, replacing the "Your All Gonna Die" warning placard, is ABS plastic from Amazon
Plastic panel the texture is a near match for OEM. Sorry I didn't make this cut out to begin with as it really simplifies some of the wire routing having an this additional access point.
The small round rocker switch, directly below the radio, is a key-switch override for the radio, allowing the radio to function key-off when desired, yet still turn on and off with ignition when this switch is off (a diode isolator is used to keep this power from back-feeding other key-on circuits. The same type switch, shown on the lower panel, provides power to the wireless winch receiver only when it's needed. Keeping power off to the winch receiver, until needed, helps prevent inadvertent operation, and possible damage, due to RFI (radio frequency interference).