For 1979 GMC C3500 Accessory Power Relay Connector United Automotive 45983SQMR

For 1979 GMC C3500 Accessory Power Relay Connector United Automotive 98513CRKH

For 1979 GMC C2500 Accessory Power Relay Connector SMP 42816XYCC

For 1978-1979 GMC Caballero Accessory Power Relay Connector SMP 55499RJZN

For 1979 GMC P1500 Accessory Power Relay Connector SMP 64358TXWF

For 1979 GMC K2500 Accessory Power Relay Connector SMP 55493VWVP

For 1979 GMC C3500 Accessory Power Relay Connector SMP 65935WQDQ

For 1979 GMC K3500 Accessory Power Relay Connector SMP 49431ZCHN