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⚡ Upgrade your ride’s electrical game with Nilight’s powerhouse relay set!
The Nilight 50003R is a premium 5-pin SPDT automotive relay set designed for 12V systems, delivering a high switching capacity of 40A (normally open) and 30A (normally closed). Featuring a durable male-female interlocking socket design and color-coded wiring harness, it ensures easy, clean installation and universal compatibility. Built to withstand extreme temperatures and vibrations, this 5-pack includes a 2-year warranty, making it the reliable choice for upgrading or replacing automotive relays in lighting, starters, and more.














| ASIN | B0748F1JK4 |
| Best Sellers Rank | #4,643 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Replacement Starter Relays |
| Brand | Nilight |
| Brand Name | Nilight |
| Coil Resistance | 50 Milliohms |
| Coil Voltage | 12 Volts |
| Connector Type | Plug-In |
| Contact Current Rating | 40 Amps |
| Contact Material | Silver Copper |
| Contact Type | Spdt |
| Current Rating | 40 Amps |
| Customer Reviews | 4.6 out of 5 stars 3,400 Reviews |
| Global Trade Identification Number | 00600537013346 |
| Included Components | 5PCS Relay Harness Set |
| Item Type Name | Nilight Automotive Relay Harness Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Wiring Harness - 5 Pack,2 Years Warranty |
| Item Weight | 0.5 Pounds |
| Manufacturer | Nilight |
| Maximum Switching Current | 40 Amps |
| Maximum Switching Voltage | 30 Volts (DC) |
| Minimum Switching Voltage | 30 Volts (DC) |
| Model | 50003R |
| Mounting Type | Surface Mount |
| Operation Mode | Automatic |
| Part Number | NI-RE05 |
| Specification Met | UL |
| UPC | 600537013346 |
| Unit Count | 5.0 Count |
| Upper Temperature Rating | 125 Degrees Celsius |
| Warranty Description | 2 Years Warranty |
| Wattage | 560 watts |
M**C
relays that actually work out of the box
Used these for some LED light work on my truck and every single one worked perfectly with no surprises. The wiring diagram printed right on the relay is super helpful when you're doing your own install and don't want to keep looking stuff up. Having the harness included means no splicing which saves a ton of time and makes the whole thing look cleaner. Really solid kit especially for a 5 pack at this price.
S**Z
Fantastic
They work just fine, good pigtail, have screw-point, all as described and expected.
K**.
Awesome Product.
Almost never give 5 Stars, but this one is well worth it. Awesome product.
M**H
Works great, directions are poor
The way the directions are worded is confusing. I used these to switch circuits for my boat. I ended up just using the schematic on the relay itself. Once properly wired, they work great, and you can't beat the price!
R**O
Toyota starter relay replacement
Perfect replacement for Toyota starter relay. A year after my 5VZ swap on my 1989 Toyota 4Runner (5-speed/manual transmission/previously 3vz engine.) I started getting a "click no start" issue. New battery and checked EVERYTHING prior to finally testing the starter relay. Installed another used OEM Toyota relay that started doing the same thing. Added this relay with an inline fuse and hasn't given me an issue over a year. * *Blue wire is power wire on the relay, soldered the inline fuse to the blue wire, soldered a long wire I got off a parts truck, crimped a ring terminal on the end and hooked it up the positive terminal of the battery. Even ran my wires thru the male side of the old relay connector to give it a factory finish/look.
K**Z
Buena calidad
Buena calidad
M**Z
Easy straight-forward wiring!
The price is certainly right! What I like about this product is that it includes the connection socket with colored wires. What I found difficult with this product is that the connection socket slots are not perfectly aligned to accept the blades of the relay assembly. (It appears the socket was assembled without care). If one attempts to insert the relay assembly with force, it will damage the socket since not all of the blades line up to the haphazardly assembled socket. One has to first carefully match the relay blades to each slot in the socket by slightly bending the ones that don't fit precisely. Then the relay will insert without damage or difficulty. My brother's Jeep has messed up wiring in the low beam headlight circuit somewhere in the wiring loom. We used one of these relays to just rewire the low beam circuit to go around the bad wiring. The relay is controlled by the regular low beam switch on the steering column so the car still functions as if its original wiring was still in play. (We disconnected the original wiring from the low beam light filaments and replaced it with the output of the newly installed relay)! So far, it has been working perfectly for the past 2 weeks! What is still a mystery is how long will this relay continue to function seeing as it is from China? As an aside, one should 'cap off', (or at least tape off), the end of the unused red wire. It is a funtional wire connection to the relay that is not normally used.
G**D
Excelente articulo.
Exactamente como esta descrito. Excelente
G**M
Bien producto
El arnés se ve de buena calidad, el cable que tiene es grueso, los relay entran justo en el arnes, hay que ver cuánto duran los relay
K**D
Nilight Relay +++
Used to add a relay to serve as a signal for connect to the high beam working as switch for shutting off the fog lights, working well and quality are pretty devent.
A**R
good value
they work great and are way cheaper than buying at local stores.
E**S
Buena calidad
Funcionó perfectamente para mi proyecto
A**N
Excellent value
The quality and value are great. 5 relays and 5 harnesses for a great price. They work great.
Trustpilot
3 weeks ago
1 month ago