The Off-Grid Power 4-Panel Solar Wiring Kit includes the black DC and 10 AWG 600V PV cable, copper lugs, and adhesive-lined heat shrink needed to connect the optional 4-panel solar module to a compatible MMH Off-Grid Power Bundle. Sized to match our detailed wiring diagrams, it supports connections between the solar array, charge controller, protection, and DC system. Red and black heat shrink are included to identify positive and negative terminations.