Mercury - Quicksilver Power Trim Relay Electrical Control System Marine-Grade Sealed Housing 8M0207773. Overview. Few things interrupt a good day on the water faster than trim that won't respond. You tap the switch, expect that familiar whir, and instead you get nothing. This Quicksilver power trim relay is the quiet problem-solver behind smooth trim operation, restoring that instant, confident response you rely on. It's a small component, but when it's right, your outboard feels predictable aga