OER Parts offers a wide selection of Battery Accessories for your 1966 Ford Ranchero. OER Parts offers 1966 Ford Ranchero Battery Tender, 1966 Ford Ranchero Battery Managment System, 1966 Ford Ranchero Dual Battery System Controller Set, and 1966 Ford Ranchero Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller