Features:

  • User Manual available for download under Product Information Details
  • Waterproof construction & heavy duty 12AWG wires for the main contact.
  • Bosch style 5-Pin SPDT (Single Pole Double Throw) Relay.
  • 12VDC (14V Max) and 40A/30A High Switching Capability.
  • Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Yellow - Output N/C (87a), and Blue - Output N/O (87).
Works with Air Dog lift pumps

Needed a relay for my Air Dog II 165 lift pump and gambled on this one. So far, it works great and I didn't have to pay for Air Dog's ridiculous markup. Plugged right in to the socket on the existing harness and the lift pump sounds stronger now than it has in a long time (it progressively got weaker over time due to the failing OEM relay). Extremely happy thus far with the performance and quality of the relay. As a side note, this comes with a prewired socket which, if you are using g for a lift pump, is a bonus since it isn't needed and you will have a spare for something else.

Heavy Duty, SPDT, "Type B", 14 volt, 40/30Amp relay. Read my review to see what Type B means (Pin Layout)

This is a nice heavy duty relay. This relay comes with no info. Most of the pins #'s are covered in adhesive and are difficult to read. So I will give the info here. Hopefully this will make your install easier. There are two types of 5 pin relays. Type A and Type B. This is a Type B relay. This is noted by the position of pin 30. I was able to determine this because, lucky for me just enough of the 3 was peaking out from behind the adhesive, to allow me to determine pin 30 location. It is sort of the key or primmer to decoding relay types. (12 volt planet has a nice article on 5 pin relays, if you want professional advice. I am just a guy on amazon, so take my advice for what it is worth) So I am wiring a reverse camera for my 2009 BMW E93 convertible. It did not come with a touch screen head unit, it came with an old school unit with only the basic digital screen. I updated my car with a 7 inch sat/nav with HD screen. Even though this car has pretty good visibility, the screen has backup camera capability, and Amazon offers a pretty cool back up camera that integrates into the tag light. So I figured why not. Well the reverse light is not a constant 12 volt, so I needed a relay to provide constant 12 volt power to the camera, and I use the reverse light as the on switch. My set up: Pin #30...constant 12 volt supply from a fused 15 amp supply line connected directly to my battery. BMW puts these in the trunk, right next to the tail light I am also tapping. (thanks BMW, easy peezy) Pin #85 Ground...attach this to any ground lug on the car body Pin #86 Switch source... for my BMW this is the black /violet wire to my tail light Pin #87 the red wire on my camera *****Some relays switch position #85 and #86, but form what I understand this is immaterial, because it is just either end of a switch, and so they are reversible, but your application may vary. THe pin positions for #85 ad #86 are unreadable in this relay. The wires on this relay are much heavier gauge (12 & 16 gauge) than the 15 amp circuit I am supplying or the 2 amp draw I am using. But that is to be expected from a 40 amp relay. Just know when you buy butt end connectors, you will need them to fit a heavier gauge. Or by pass the wires and buy 6.3 mm female connectors to connect directly to the relay pins. This however will bypass the waterproofing built in to the male portion of this relay, with the actual wires on it.

It is good quality

I used this product as a switch to wire a backup camera into my car as I was having issues with the reverse light not providing a constant 12V to the camera to turn it on. The product came quickly and appears to be great quality. The wiring is well insulated and is heavy gauge. The only problems I can think of are that there is no labeling in the outside to make it easy to know which wire is which. I had to open it to make sure I was wiring correctly. Also, I had to just zip tie the wires to another bunch of wires to secure it in place as there is no hole in the plastic casing to loop through. There is a slot on the side where it probably slides onto something but I have no idea what to slide it onto. Maybe it would work in a different application than what I used it for.

Excellent for leaky old classic car use

I have used four of these well constructed relays to relieve the current load from lighting switches in my 1970 MGB Roadster. The waterproofing is excellent (on the relays, that is). Some users have noted that the black and white leads (ground and trigger, respectively) are reversed on these devices. This is easily corrected by removing the leads and swapping them. A small flat blade jeweler's screwdriver can be used to gently pry away an easily seen locking tab on the appropriate relay socket terminal while pushing the wire free. Bending the little tab back will facilitate re-locking the terminal in place after swapping the wires. Similarly, the yellow lead (terminal 87a) -- if not needed -- can be removed and the resulting hole plugged with silicone sealer

Perfect waterproof relay!

I used this relay for the electric fuel pump on my 86 Fiero. It is over rated for the amount of amperage so it wont have to work hard. It's waterproof! It solved all my issues on my car. It is twice the quality of any automotive relay that is available at your local parts houses. Great job!!

Good Quality, Heavy Duty.

This is a really nice heavy duty relay. I put it in my 2017 Superduty to run my auxiliary backup lights with my upfitter switches. With this relay installed I can run the auxiliary backup lights in two modes, ON when ever I want (even with the truck OFF) or make them go ON and OFF with the factory back up lights. Works great and I didn’t have to use a diode. My configuration uses two of the upfitter switches in the truck. The mounting bracket worked out nice. This relay is water proof as well, has a nice ribbed torturous path gasket.

Good Quality, heavy gauge wires

Good Quality, heavy gauge wires. I installed a 12” LED light on my Zero Turn Mower. I used a round, push button type LED illuminated switch. The relay was this 5 pin Type B 40 amp relay. If you do not regularly install relays, the diagrams provided with components can leave you uncertain. Colors on the relay wires were relative to this particular one, but Pin numbers are consistent with Type B standards.

Works as a charm

Used this relay to provide constant 12V power to the backup cam (the reverse light circuit didn't have sufficient voltage, but was fine as relay control signal). Works as a charm! Mounting bracket came in handy for an easy secure mount to an existing bolt. As some reviewers pointed out, relay wires are a tad big for this type of application, but in my case I was able to use blue heat shrink butt connectors to connect 12AWG relay wires with 16AWG wires with no issues.

Top quality, great price!

Top quality, great price! I used them to start 2 pusher fans in front of my truck a/c condenser to get better cooling at idle. They start when the a/c is turned on

A nicely made sealed common relay for use in areas where water might be a problem.

I needed a relay that was sealed, otherwise I would have used anyone of a dozen or more that I already had. I used this in a high-low headlight conversion on a Chevy C1500 that I wanted to do for years. This one was nice, had the leads already sealed into the socket, the hanger for mounting and it worked perfectly for my small project. All I needed was butt splices that would seal up when heat was applied (couldn't find mine until later), which I also bought here on Amazon.

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