For 1979 GMC C1500 Accessory Power Relay Connector SMP 45275FMBW 1982 1981

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 G2500 Accessory Power Relay Connector SMP 68352TVXD

For 1979 GMC P2500 Accessory Power Relay Connector SMP 74249BBRJ