Mercury - JPI Side Power Thruster Adapter Harness Rigging Accessory 84-8M0125880. OverviewThis adapter harness lets you run Side Power brand thrusters with Mercury's Joystick Piloting for Inboards system. JPI already works with Vetus thrusters out of the box, but Side Power units need this harness to "speak the same language." Each thruster gets its own adapter, keeping the wiring straightforward and the control signals clean. It's a simple add-on that gives you more flexibility when choosing th