Quote
Dont know how hard it would be to waterproof one, then have to worry about engine heat killing it.



Here is the closest thing you can get to waterproof. J.C. Whitney has them.

[Linked Image]

1500-WATT MAXX« SST MARINE POWER INVERTER
Lets you operate your 120-volt equipment/appliances anywhere 12-volt power is available
Converts 12-volt DC power to 120-volt AC power
Corrosion/vibration-resistant constructionùperfect for "wet" environments (dockside, your boat, etc.)
Provides power even under the worst conditions! Handy in your car, pickup, SUV, van or RV. High surge capacity to start heavy-power-load appliances. Filtered modified sine wave output provides consistent AC power for sensitive equipment. Short-circuit and over/under-voltage protection. Thermal shutdown with auto reset. Compact design and lightweight for easy portability. Internal and external circuit protection (circuit board is coated to resist corrosion). Durable, weather-resistant aluminum housing with heat-dissipating fins. Overload protection. Electronic circuit protection. Low-battery shutdown. High-speed cooling fan with high-volume, vented housing. Ammeter. Battery voltmeter. Shock-resistant, UL-listed, GFCI-protected outlets. Wires to battery. Power: 1500 Watts Continuous/3000 Watts Peak. 120-volt Outlets: Two. 8"W x 3-1/2"H x 13"L. Weighs: 14 lbs.

Trooper has been sold!