provided in the receptacle 362 includes a single pole single throw switch 382 such as a lever lite switch number 26f832 manufactured by switchcraft inc of new jersey the switch 382 has connection terminals 385 386 and 388 which for example connect to the electrical system of a vehicle such as an automobile the switch 382 is supported on a sleeve 384 by a support bracket 390 held by lock nuts 39z 394 and 396 398 a switch arm 400 of the switch 382 extends over a free end of the sleeve 384 for engagement with a push rod 402 that is axially moveable in the sleeve 384 the push rod 402 extends through an opening 404 in the cover 366 for connection with a lever 406 pivoted at 408 to the cover 366 a biasing spring 410 is disposed in the sleeve 384 between the cover 366 and a disc 412 fixed to the push rod 402 a free end 414 of the lever 406 extends into a sleeve 416 through an opening 417 the sleeve 416 which is affixed in any suitable known manner to the cover 366 has a cap 418 threaded to one end thereof and an annular fusible portion 420 affixed to an opposite end thereof and formed of a known alloy commonly used in fusible links which softens or loses its structural integrity at approximately 160 u00b0 f a biasing leaf spring 422.