





⚡ Stay powered, stay unstoppable — the ultimate relay harness for pros who demand more.
The OLS 5 Pack 40/30 Amp Waterproof Relay Switch Harness Set features Bosch-style 5-pin SPDT relays with heavy-duty 12AWG wiring and waterproof construction. Designed for 12V DC systems, it supports high current loads up to 40 Amps, making it ideal for off-road vehicles, boats, and rugged automotive use. Each set includes 5 relays with harnesses, a metal mounting tab for easy installation, and a 1-year warranty, ensuring durability and reliability in harsh environments.









| ASIN | B01MTQNJKM |
| Brand | ONLINE LED STORE |
| Coil Voltage | 12 Volts |
| Connector Type | Through Hole |
| Contact Material | Silver Tin Oxide |
| Contact Type | Normally Open |
| Current Rating | 40 Amps |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,453) |
| Item Weight | 1.14 Pounds |
| Manufacturer | ONLINE LED STORE |
| Manufacturer Part Number | PSZACCEPS178R |
| Minimum Switching Voltage | 12 Volts |
| Mounting Type | Panel Mount |
| Operation Mode | Manual |
| UPC | 816165023873 |
| Wattage | 480 watts |
I**S
Thanks this product was exactly what we wanted. Thanks again
P**T
good quality product saves a fortune using this with transistor and some wire. Cheap fix bi passing startup air mix removed all warning lights and got truck out of limp mode.Youtube is a lifesaver!
S**S
Outstanding module, this was able to quickly and efficiently help me wire a new horn to my truck safely. Would buy again.
K**N
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. 7/16/20 Update: Two years now and still working, no issues. Thumbs up! 7/25/2023 Still going strong! 05/21/24 still working!!! I bought two of these on my original purchase, one as a spare because that’s what I do. The spare is still sitting on the shelf in my basement.
J**N
Great Product and fast shipping. Thank you!
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