- [Product Description] : 12VDC (Max. 14V) 4-pin SPST (single pole double throw) all-copper coil relay, contact switching voltage 12V, coil power 1.8W, rated current 40A, with 40A high switching capability.
- [Wiring harness specifications] : Black – VDC (30), white – ground (85), red – output N/O (87), yellow – trigger (86).
- [Material] The relay adopts pure copper core cable, silver alloy contact, strong conductivity, better stability, and the relay kit adopts high-grade flame retardant materials to ensure safe use and long service life.
- [Easy installation] : Fixed metal holes, easy installation, just make sure to follow the wiring diagram.
- [Service guarantee] No reason to return within 30 days, 1-year warranty service; If you are not satisfied with this product, please contact us for an exchange or refund. We hope you will enjoy excellent service.


Frete Grátis em todo o BrasilProduto Original Importado dos EUA
JD1912 12V 40A 5-Piece Automotive 4-pin SPST Relay with Harness Receptacle (Interlocking Harness Receptacle Holder), 40A Automotive Relay for Cars and Trucks.
*$349.00
Informação adicional
Connector Type | Plug-In |
---|---|
Contact Material | Silver Alloy |
Contact Type | Normally Open |
Current Rating | 40 Amps |
Mounting Type | Plug In Mount |
granite –
These are your standard relays and always good to have handy if needed. Wires are heavy gauged and pre attached. Not a bad price point for the set.
Charlie M –
Overall, these are pretty decent. They get the job done. My only beef is that the wires are probably a little smaller than most people would like. The load wires are like 16 or 14awg. Fine for a short run, but don’t put any real distance on it. Not a huge deal for me since I put a 30a fuse before it, but just something to be aware of.
SD Dale –
It’s always nice to have some relays around in case you add accessories to your vehicles.
Bucky Goldstein –
These relays all seemed to work well. The connectors are interlockable to make a strip, but it was too difficult to lock them together just by hand. All the wires appear to be copper (not CCA). The trigger wires are 0.75mm2 (18awg) and the switched wires are 1.5mm2 (16awg) which aren’t really rated for 40A so I wouldn’t want to drive a 40A load through these wire harnesses – maybe 20 max. The relays themselves are not overly tight in the connectors, but they’re snug. They’re not waterproof, so they would be better suited for interior installation in a vehicle versus under the hood where they would likely suffer corrosion. All in all they’re not bad for the price for a set of basic relays with pre wired harnesses.
I’m not a fan of the black and red coloring for the switched wires, so if you’re not familiar with wiring this type of thing, watch some videos and learn about them.
Carl J. –
I do a fair amount of custom wiring on the cars that I rebuild and often need a relay for components I am installing. These relays are perfect for me to have on the shelf for when I need one. They are a common and fairly standard pin configuration so they fit right in with most automotive wiring. The pre-wired bases make it easy to whip up a quick harness for integrating the relay into my project and make for a nice clean professional installation.
UnboxingProjectDotCom –
Showed up quick, and work as expected. Not much more can be said, they just work.
BS –
Just your standard auto relays. Wires are pre-attached and easy to connect to existing wiring. Good value for the price.
AJ –
Wire size of socket is too small to support the amperage of the I clouded relays.
Wire size is approximately 18-16 gauge, and can support 20A before starting to get warm to the touch.
Sockets are not waterproof, however the relays are.