Mercury - Remote Trim Harness Triple / Quad Engine Trim Routing 84-8M0175106. OverviewThis harness gives triple- and quad-engine boats a clean way to run remote trim controls without getting tangled in extra wiring. It keeps the trim circuit straightforward, which makes the helm feel calmer when you're making small bow changes or settling the boat into a groove. The layout stays tidy, so you're not wrestling with a bundle of wires every time you open the rigging bay. It's a simple upgrade that h