the truck is a 2001 se v6.
everything works, that i know of,horn,lights,etc.
as far as block heater, i don't think the wire is heavy enough for that. they appear to be 18ga.
also it's a connector, not a plug, i.e. household type..
it's not dangling loose and has a factory wire tie on it holding it in place...
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in the morning i'll be sober, and you'll still be ugly.