










⚡ Stay switched on, rain or shine — power your ride like a pro!
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. Rated for 12V DC systems with a high switching capacity of 40A/30A, this set is perfect for off-road vehicles, boats, and automotive upgrades exposed to harsh environments. Each relay includes a metal mounting tab and color-coded wires for easy installation, backed by a 1-year manufacturer warranty.









| ASIN | B01MTQNJKM |
| Batteries Required? | No |
| Batteries included? | No |
| Colour | BLUE (30/40A) |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,445) |
| Date First Available | 22 Nov. 2016 |
| Item Package Quantity | 1 |
| Item Weight | 517 g |
| Manufacturer | ONLINE LED STORE |
| Manufacturer reference | PSZACCEPS178R |
| Measurement System | Metric |
| Part number | PSZACCEPS178R |
| Plug profile | Panel Mount |
| Product Dimensions | 25.4 x 15.24 x 4.11 cm; 517.1 g |
| Size | Pack Of 5 |
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.
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!
J**N
Great Product and fast shipping. Thank you!
M**K
Plug and play replacement for original bosch relays. Work great.
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