Review on 🔌 Reliable and Convenient 4 Pack - EPAuto 30/40 AMP Relay Harness Spdt 12V Bosch Style for Efficient Power Distribution by Robert Sorrells

I've used them on everything from headlight upgrades to electric accelerator pedals and even as a starter relay on a Chevy 84 truck and had no problems. The relays are well sealed so you don't have to worry about water getting into the relay itself. The included wiring is a nice bonus, but it's NOT sealed, allowing water to get into the connectors. Also, the cables supplied with the kit may be too small for sustained high current, certainly not suitable for a sustained 30/40 amp load. Luckily, the terminals are easily removed from the connector, allowing you to connect heavier cables and still look professional. The bracket is a little flimsy but holds the relay in place. For the price you can't go wrong, certainly a lot cheaper than buying from your local parts store.