EPAuto5 Pack - 30/40 AMP Relay Harness Spdt 12V, 5-PIN SPDT Bosch Style

it works perfect and I haven't had any issue wit it.

I was rewiring the lights, electric cooling fan, and horns on my Alfa Romeo. These came with wiring that was heavy duty, unlike some others with light wires, and were easy to install. Had the expected terminal numbers for easy reconnection.

Had to wire up some lights on a truck, the relays worked good, were priced right, and arrived fast!

Relays seem to be well built, reliable, sturdy, and capable.Wiring harnesses also seem to be well built.Just an FYI, even though the relay is rated for 30A, doesn't mean you should run 30 amps through it. As others have mentioned, the wiring harness included, is not rated for that high level of current.You should always factor in, 'the weakest link', i.e. if the wires feeding the relay will not handle more than say 8 amps (and I don't know what these wires will handle), it doesn't matter much how strong the relay is, you don't run more than 8 amps through the wires.... duh. and even that is pushing it. When an overall circuit is rated for 8 amps max, you should not get anywhere near 8 amps anyway. Pushing anything to the max is never a good idea. Besides, running high current through a mechanical relay, the contacts will arc, carbon will build up on the contacts, the contacts will become pitted, and eventually.... one day, when it energizes, the contacts will stick, and whatever it is will be 'On' continuously... if it comes on at all. You might want to consider using a solid state relay (DC) or a triac (AC) imho.Any time you are dealing with any type of high current, get someone that has an electrical engineering degree or background to look at your circuit designs... just because you may know how-to, doesn't mean you know how to.One of my kids kept leaving their car lights on, apparently they have a lot on their minds these days. I used this to build a simple 'lights-on' circuit. This particular car doesn't have one. I found a line that goes to 12 volts when the key is turned on, and found the "Lights" wire. I wired it up, so if the lights are on, and the key is off, a Piezo Electric buzzer sounds. It is very low current, and works great. We haven't had another "accidentally left the lights on" incident since.These are quiet handy for any number of little projects you might have.

Good quality and includes pigtail connectors. Work great!