Tips for Launching Your Boat When Using Non-Submersible Tail Lights

Not all boat trailers are equipped with submersible or sealed LED lights. If you’re using traditional non-submersible tail lights, extra care is needed to prevent cracked bulbs, blown fuses, or corrosion. Here are some practical tips:

1. Allow Lights to Cool Before Backing Into Water
Hot incandescent bulbs can shatter if submerged too quickly. After towing, give your lights a few minutes to cool before launching your boat.

2. Unplug Temporarily—If Your Trailer Allows It
With older trailers, unplugging the light harness before submersion helps protect bulbs and wiring from short circuits. However, most modern boat trailers with surge disc brakes require the lights to stay plugged in. If you unplug them, the brakes won’t disengage, preventing you from backing up. Always confirm whether your trailer allows safe unplugging before launch.

3. Protect Sockets With Grease
Apply a thin layer of lithium grease or dielectric grease to bulb sockets and electrical connections. This barrier helps reduce corrosion and extends the life of your non-submersible lights. For best results, reapply the grease at least once or twice per season or more often if you launch in saltwater to maintain consistent protection.

4. Consider Upgrading to Sealed LED Lights
If you launch frequently, upgrading to sealed LED trailer lights is highly recommended. They’re designed for repeated submersion, last longer, and eliminate most of the risks associated with non-submersible lights. While the initial cost may be higher, sealed LEDs offer superior durability and longevity, making them a cost-effective investment over time.

✅ Pro Tip: If your trailer still uses non-submersible lights, treat them as a short-term solution. Regular maintenance can buy you time, but upgrading to sealed LEDs is the most reliable way to avoid launch-ramp light failures.