I'm in the process of repairing some bogus and burnt wiring under and behind the dash of a new-to-me 1973 C20, and found something that is unfamiliar to me. It's a spring loaded switch mounted on the bracket immediately above the gas pedal (see green arrow in photo). It's a two pin switch fed by orange and brown/white wires. The orange wire goes out through the firewall near the fuse block, while the brown/white wire terminates in a pair of red connectors (shown in second photo). I tried searching, but have no idea what it's called. Can anyone tell me what the heck this thing is? Thanks!