Features:

  • User Manual available for download under Product Information Details
  • Bosch style 12VDC (14V Max) 5-Pin SPDT (Single Pole Double Throw) Relay with 40A/30A High Switching Capability.
  • Interlocking design relay socket harness base for easy cable management & organization.
  • Heavy duty 14AWG wires for the main contact and pre-wired with 6" pigtail leads.
  • Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Yellow - Output N/C (87a), and Blue - Output N/O (87).
Great value and works well!

I have only been able to use 1 of them so far and it works and served its purpose. Great value and loved that it came pre wired and the wires were pre struck for fast splicing or crimping. I used it to wire an electric car fan independent from the cars wiring harness. Tapped into a fuse. Works great for now. 5 stars but I would have like to see improvement on quality of wires. It was stranded wire but very thin. I have bought this item with my own money and for my own purpose. Please click that the review was helpful if this review helped in anyway. Thank you.

Bang for the buck

Nice set of relays, everything looks nicely made. Comes in a nice plastic box as an extra. Relays are sealed on the bottom to prevent water and moisture from getting in and causing premature deterioration of the contacts. While the 14 gauge wires on the provided relay sockets are not sized for the full current rating, it's fine for the majority of applications these are going to be used for, and it wouldn't really be good to make them with a heavy gauge by default, as they'd just be more difficult to work with. If you really need to switch the high currents, just wire it up directly to your wire instead of using the relay sockets. The relay sockets can interlock side by side with the grooves provided on the sides, and if you intend to separate them at some point in the future, take a utility knife and ease the edge on the tip of the male tongue, so it doesn't lock in place. That allows it to slide back off more easily. The mounting tabs are provided in a separate bag for use if needed; they will latch in pretty much permanently once clicked in, as they'll need prying to try removing. Probably could leave them off until you're ready to mount, since the center ones in a ganged setup may not be needed. The red is the COM (Terminal 30), yellow is NC (Terminal 87a), and blue is the NO wire (Terminal 87) white and black are the coil inputs, marked as 14V input. The pull in voltage was about 7.8V, and drop out voltage about 3V. For maximum current handling on the NO contact, full coil voltage should be applied, as this draws the contacts together with greater force and reduces the contact resistance. Measured the contact resistance using a 1A test current, and the terminal 87 normally open (NO) contact read about 4.9 milliohms, while the 87a normally closed (NC) contact read 6.8 milliohms. That corresponds to 0.2V drop across the terminals at full loading. As they degrade over time and loading however, expect it to increase, and if you're continually driving full loads, it'll start to heat up and degrade increasingly rapidly until it fails. You may want to periodically measure the voltage drop while driving the load to detect marginal conditions that may indicate pending failure. Check your installation by using your DMM in millivolt range and measuring across the contact splices. If you have any significant voltage readings across the closed loops, it may indicate you have bad contacts at the relay socket, bad relay, or just bad splicing. Some dielectric grease on the relay terminals will help prevent degradation of the socket contacts over time if it's used in a harsh environment exposed to moisture. Crimps on the sockets looked good and uniform, no problems apparent there- All in all, very nice and useful set of relays.

they arrived quicker than expected which was nice. Locally a single 5 pin Bosch style relay ...

So I just received these, they arrived quicker than expected which was nice. Locally a single 5 pin Bosch style relay goes for about $6, so essentially I got three for one and they include a plug for each of them for a professional style installation. That makes this an outstanding deal in my opinion. I plan to use a couple to repeat the turn signals on my vehicle to the aftermarket marker lights. they're also handy for using a low current switch to control a high current circuit like driving lights. I will adjust my star rating once I have used a few of them based on the results I have now used several of these and they work very well

Amazing price for a set of relays and sockets

Some places sell a single relay socket for nearly the price of the 6 relays and 6 sockets included in this product so this product so I was super happy when I found these. The relay sockets have all 5 terminals wired which is a nice touch since a few of the sockets I have used in the past only had the 4 outer terminals wired. These have no issues snapping to other sockets I have and the wire is decent quality. I haven't run these very long to speak to the durability of the relay itself but the so far so good.

These relays were better water sealed than the original ones in my power ...

Local Auto Zone 12$ for just one! These relays were better water sealed than the original ones in my power winch which stopped working because they got water soaked. Spray them with Flex seal before you put them back in to be safe

Versatile

Those who know what these are for need no explanation or review. If you are a builder or tinkerer you need these. I have built many VW based toys and modified moorsicles. These relays are great and a must have for lighting, heated grips, amps etc. The pig tail harness is a real plus as I like to solder splice my wiring. Check these out, highly recommended.

Perfect for prop building

The leads are just right for interconnections between relays. These are good enough for simple 12v prop building for haunted houses and escape rooms. The interlocking harnesses make assembly organized. I so far used eight. I would buy again. If you use these with switches and LEDs to indicate the state of the switch, use switches that are ON ON, not ON OFF ON. With a 3 position switch in the off position floating and a relay set to a negative trigger, the LED will light. With a positive trigger, a 3p switch and LED behave as expected. In either configuration, the relays perform perfectly.

Good deal

This is a good price for 6 relays. The junkyard wants $5 ea for used ones . 30/40 amp contacts will handle most circuits. The sockets run 14 Ga wires which are kind of stiff & belligerent but adequate for the amps. They also interlock which makes for a solid set up but is kind of a bear to unplug individually. These aren't necessarily waterproof so they should be kept out of the elements. They have both NO and NC terminals so will handle most applications.

Interlocking is a neat feature

I got these because I was wiring up a fan controller for a 2 speed automotive fan. These work perfectly for it and it's nice to be able to daisy chain the connectors together for a cleaner look. I only needed one SPDT and one SPST but was able to remove pin 87a from the connector together so I didn't have a live wire to worry about terminating. For the price and the fact you get 6 of them this is a rear bargain in my book.

Not yet used, but look O.K.

I did not intend to use the relays as the mfg. intended. I want them to control an N gauge street car setup which will react to limit switches and pause and reverse two motorized cars. I would have liked DPDT, but will use two relays for each position. These were the most reasonably priced relays - and smaller when unpotted - that I could locate.

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