OER Parts offers a wide selection of Battery Parts & Hardware for your 1978 GMC Jimmy. OER Parts offers 1978 GMC Jimmy Battery Trays, 1978 GMC Jimmy Battery Hold Down J-Bolts, 1978 GMC Jimmy Battery Tray Hold-Down Clamp, 1978 GMC Jimmy Top Battery Tray Clamp, 1978 GMC Jimmy Battery Tray Brace, 1978 GMC Jimmy Quick Release Battery Cable Bolts, 1978 GMC Jimmy Side Terminal Battery Cable Bolts, 1978 GMC Jimmy Side Terminal Battery Charging Post, and 1978 GMC Jimmy Side Post Battery Cable Terminal.