Update: Figured it out it "IS" the seat belt buzzer connection that goes to the cable coming out of the seat belt sleeve
Last edited by soundhd; December 15th 2021 4:45 pm.
Recently purchased (10-2021) a 1991 Chevy G-20 “Shorty”. Past vans are a 1976 Chevy G-10 (purchased new in 1976 & sold in 1995). A 1978 Chevy G-20 Shorty purchased in 2010 and sold in 2015.