Yamaha - Stay, fuse box - 6KN-82171-00-00 MerCruiser-Alpha-Sterndrive-2014 take a heavy-gauge jumper wire

take a heavy-gauge jumper wire (typically 6 AWG or 8 AWG) and connect the positive (+) terminal of Battery 1 directly to the negative (-) terminal of Battery 2

The non-trim handle keeps things simple

This product has been superseded by: 99999-03874-00

Construction: Made from reinforced nylon

OIL SEAL LOWER O/B

Yamaha - Stay, fuse box - 6KN-82171-00-00 MerCruiser-Alpha-Sterndrive-2014 take a heavy-gauge jumper wire6KN 82171 00 00 STAY, FUSE BOX WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.