« Reply #1 on: February 16, 2018, 03:59:21 PM »
That metal box is the blower motor relay and the other plug looks like the connection to the A/C Pressure Switch that would be mounted to the A/C Accumulator/Dryer.
Logged
-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6