These Anderson Environmental Boots are keyed as either SOURCE or LOAD sides.
Use SOURCE on the cable side that is directly connected to your battery or power source. Use LOAD one the cable side of the device/accessory that you are looking to plug in to get power.
These soft shell boots provide water, dirt, chemical and UV protection to SB connectors. Rated to IP64 when mated or unmated when the integrated cover is used. The SB50 boot can accommodate 6-10awg cable. Use ONLY with Anderson SB50 connectors. This is perfect for use in the ACB-4 Bracket.