OER Parts offers a wide selection of Battery Accessories for your 1969 Plymouth GTX. OER Parts offers 1969 Plymouth GTX Battery Tender, 1969 Plymouth GTX Battery Managment System, 1969 Plymouth GTX Dual Battery System Controller Set, and 1969 Plymouth GTX Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller