This 5-PIN 12V automotive relay kit is built to handle the demanding electrical needs of your vehicle's horn, starter, radiator fan, and motor circuits. Rated at 40/30 amps SPDT, it delivers heavy-duty switching performance with copper contacts that ensure reliable conductivity under high current loads. The IP67-rated waterproof construction protects against moisture and harsh under-hood conditions, making it a dependable choice for long-term use. The relay features an 80-ohm coil resistance and draws just 1.8 watts, offering efficient operation with minimal heat buildup. Installation is straightforward thanks to the plug-in socket mount design and the pre-wired harness featuring both 14 and 16 AWG wires. The versatile 5-pin layout supports both normally open and normally closed switching configurations, giving you flexibility across multiple automotive circuits. Operating voltage ranges from 6V to 14V DC, making it compatible with standard 12V vehicle systems. Compact dimensions of 2.22 x 1.4 inches make it easy to fit in tight spaces under the hood.