

⚡ Upgrade your ride’s power game with EHDIS relays—fast, fierce, and fail-proof!
The EHDIS Car Relay 4 Pin 12V 40A SPST (Model JD2912-1H-12VDC) is a heavy-duty automotive relay designed for high current applications. Featuring a rapid 0.01-second switching time, silver tin oxide contacts for durability, and a robust 4-pin SPST configuration, this pack of two relays offers reliable, tool-free installation and long-lasting performance for all your vehicle’s electrical needs.








| ASIN | B01J53IH5M |
| Best Sellers Rank | #26,103 in Automotive ( See Top 100 in Automotive ) #17 in Automotive Replacement Accessory Power Relays |
| Brand | EHDIS |
| Brand Name | EHDIS |
| Coil Voltage | 12 Volts |
| Connector Type | Crimp |
| Contact Current Rating | 40 Amps |
| Contact Material | Silver Tin Oxide |
| Contact Type | Normally Open |
| Current Rating | 40 Amps |
| Customer Reviews | 4.6 out of 5 stars 2,358 Reviews |
| Item Weight | 0.04 Kilograms |
| Manufacturer | Ehdis |
| Maximum Switching Current | 40 Amps |
| Maximum Switching Voltage | 12 Volts |
| Minimum Switching Voltage | 12 Volts (DC) |
| Operating Time | 0.01 Seconds |
| Operation Mode | Automatic |
| Specification Met | Ccee |
| UPC | 713653050390 |
| Upper Temperature Rating | 80 Degrees Celsius |
| Wattage | 1.8 watts |
P**W
Just what I needed !
I used these EHDIS 4-pin relays to replace a failing one in my car’s lighting system, and they worked perfectly. Installation was quick — the pins matched up exactly, and the build quality feels solid for the price. They've handled 12V and 40A loads without any issues, even after extended use. Great little relays to keep on hand for auto projects or quick replacements
C**N
Works for your needs
My Husband said, “The license plate light works on the jeep now!” So this does the job
P**O
⭐️⭐️⭐️⭐️⭐️
Amazing product and excellent quality.
R**A
Excelente
Excelente
D**5
works good price
Fit the car and easy to use and still works good price
D**.
Time it took to receive the order.
Relay was used as a replacement for a starter on a 500cc UTV and upon replacement the UTV started right off, no problem of any kind. Also was very pleased on the shipment of this item, very fast.
B**Y
Good purchase
Works great, needed for a train horn relay.
J**R
It worked
It worked
Trustpilot
2 months ago
5 days ago