When I bought my truck I found the same plug Zip tied to a mount in the front bumper, during the summer I pull it up and tie it to the Brace above the battery, and in the winter I zip tie it to my front drivers side tow hook, easy location to plug in. Im happy I have it, here in New England it gets Below 0 in Jan. and Feb. It cuts down on the time it takes my truck to warm up
-Jimmy
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~99' Silverado z71 LS 5.3~
Alpine CDA-9830 Head Unit
2-JLW12 Subs
Infinity Surrounds
Too Many Extras
04' Yamaha YZF R6 Super Sport~
Liquid Silver with Black Ghost flames
K&N Filter, Fender Delete Kit
Aftermarket Mirror Shield
Devil Carbon Fiber High Mount Pipe
Power Commander III
02' Subaru WRX Turbo Sport Wagon
Eibach Springs, Short Throw Shifter
17" Versus Campionato Wheels Wrapped in Pirrelli tires