Sierra Eclipse 2-Inch Trim Gauge Mercury/Volvo Penta

If you run a DP or SX sterndrive, you already know how much the trim gauge earns its spot on the dash. Trim your drive right and the boat gets on plane faster, rides flatter, and burns less fuel. Trim it wrong and you're plowing water or chine-walking at speed. This Sierra Eclipse Series 2-inch trim gauge gives you a clean, at-a-glance read on exactly where your drive is sitting, from full up to full down.

It's built for DP and SX sterndrives, so it reads the trim sender already on your transom and shows the position on a simple analog dial. Black face, black bezel, white pointer needle. That combo is easy on the eyes and matches most modern helm layouts. The white needle stands out against the dark face in daylight, and the perimeter lighting brings it to life after sunset. The perimeter ring lights the whole dial edge evenly, so there's no hot spot or dark corner when you glance down at night.

The "short electrical sweep" in the name just means the needle travels a compact arc across the dial. That's on purpose. It keeps the gauge shallow and lets it live in tight instrument panels where a full-sweep gauge won't fit. On an 18 to 22 foot center console or runabout where dash space is at a premium, that shorter body is a real advantage. Plan for a standard 2-inch instrument opening and give yourself a couple of inches of clearance behind the dash for the wiring and the sender lead.

Wiring is straightforward for anyone who's put a gauge in before. You've got a ground, a switched 12-volt feed, the sender wire from the drive, and a lighting feed. One tip from years of doing these: run the perimeter lighting off your instrument light circuit, not straight off the ignition. Share it with ignition and the light stays on drawing current whenever the key's on, which is an easy way to find a dead battery on a boat that sits for a couple of weeks.

This is an analog gauge, and analog gauges live and die by clean electrical connections, especially in salt air. When you land the spade terminals, hit them with a little dielectric grease. It keeps corrosion off the contacts and keeps your reading steady season after season. Skip that step and you'll see the needle start to wander after a few years as the terminals green up. Two minutes of prevention on install day saves you a real headache later.

Who's this for? Anybody replacing a foggy, dead, or mismatched trim gauge, and anybody repowering or rebuilding a helm who wants the trim indicator to match the rest of the panel. If your old gauge quit reading, or the lens clouded over, or you're moving to a clean black-face look across the dash, this drops right in. It's a factory-style replacement built to meet or exceed the original equipment part, which is what Sierra designs its whole catalog around. Keep the old sender if it tests good, since this gauge is calibrated to work with the standard trim sender range these drives use.

A couple of honest notes. On a wide-open skiff with no hardtop, a black face in direct overhead sun can wash out a little, same as any dark-dial gauge. If you run in blazing midday light a lot, a small gauge hood helps. And make sure your existing trim sender is healthy before you blame a new gauge for a strange reading, since a tired sender is the usual culprit behind a needle that sticks mid-range. Get the sender and the gauge working together and you'll have accurate trim you can trust from launch to load.

Bottom line, it's a simple, purpose-built part that does one job well. Clear trim indication, clean styling, night lighting, and a shallow body that fits where space is tight. For DP and SX owners who want their trim read handled right, it's an easy call.