Troubleshooting my climate control today - just replaced the foam tube for the temperature sensor and while I have the glove box out I'm digging around. Noticed a white box wrapped in foam insulation with two spade connectors - there are also two female spade connector wires in the vicinity that someone has jumpered together (presumably to cut the box out of the circuit). What is this thing? I'm hopeful that it will help me figure out why my blower motor comes on only sporadically. [Picture borrowed and modified from dmorrison's writeup on dash removal - thank you].

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1981 300D - {172,000}
1971 220D {Sold to TomJ}