---
product_id: 259049339
title: "OLS 5 Pack 40/30 Amp Waterproof Relay Switch Harness Set - 12V DC 5-Pin SPDT Automotive Relays 12 AWG Hot Wires"
brand: "online led store"
price: "2494137₫"
currency: VND
in_stock: true
reviews_count: 5
category: "Online Led"
url: https://www.desertcart.vn/products/259049339-ols-5-pack-40-30-amp-waterproof-relay-switch-harness
store_origin: VN
region: Vietnam
---

# 40A/30A high switching power Waterproof design Heavy-duty 12AWG wiring OLS 5 Pack 40/30 Amp Waterproof Relay Switch Harness Set - 12V DC 5-Pin SPDT Automotive Relays 12 AWG Hot Wires

**Brand:** online led store
**Price:** 2494137₫
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay switched on, rain or shine — power your ride like a pro!

## Quick Answers

- **What is this?** OLS 5 Pack 40/30 Amp Waterproof Relay Switch Harness Set - 12V DC 5-Pin SPDT Automotive Relays 12 AWG Hot Wires by online led store
- **How much does it cost?** 2494137₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/259049339-ols-5-pack-40-30-amp-waterproof-relay-switch-harness)

## Best For

- online led store enthusiasts

## Why This Product

- Trusted online led store brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete 5-Pack Set:** Includes 5 relays and harnesses with metal mounting tabs—ready to upgrade multiple vehicles or projects.
- • **Power That Keeps Up:** Handles up to 40A/30A switching for demanding automotive and marine applications.
- • **Heavy-Duty Durability:** Robust 12AWG hot wires designed for high current loads and long-lasting use.
- • **Plug & Play Simplicity:** Bosch style 5-pin SPDT relay with clear wire color coding for effortless installation.
- • **Built to Brave the Elements:** Waterproof construction ensures reliable performance in rain, mud, and off-road conditions.

## Overview

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.

## Description

The OLS PSZACCEPS178R 5-pin Bosch Style SPDT 12V DC 40A/30A waterproof automotive relay is the ideal electrical relay to be used on off-road vehicles, boats, and dirt track cars that are often exposed to wet or muddy conditions. The purchase includes the relay itself and a relay socket/harness with wires. Metal mounting tab is present on the relay for ease of installation. Set includes 5 relays and 5 relay harness.Interchangeable/Compatible with:All automobiles and devices equipped with a 12 Volt DC power source.Features:Waterproof construction.Bosch style 5-Pin SPDT (Single Pole Double Throw) Relay.40A/30A High Switching Capability.Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Yellow - Output N/C (87a), and Blue - Output N/O (87).Product Content:5 x Relays1 Year Manufacturer WarrantyHave a Question? Call Us Toll Free 1-855-LED-ONLINE (1-855-533-6654)

Review: 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.
Review: Thanks this product was exactly what we wanted. Thanks again

## Features

- User Manual available for download under Product Information Details
- Waterproof construction & heavy duty 12AWG wires for the main contact.
- Bosch style 5-Pin SPDT (Single Pole Double Throw) Relay.
- 12VDC (14V Max) and 40A/30A High Switching Capability.
- Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Yellow - Output N/C (87a), and Blue - Output N/O (87).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |

## Product Details

- **Connector type:** Through Hole
- **Contact material:** Silver Tin Oxide
- **Contact type:** Normally Open
- **Current rating:** 40 Amps
- **Mounting type:** Panel Mount

## Images

![OLS 5 Pack 40/30 Amp Waterproof Relay Switch Harness Set - 12V DC 5-Pin SPDT Automotive Relays 12 AWG Hot Wires - Image 1](https://m.media-amazon.com/images/I/41RYFVq8HyL.jpg)
![OLS 5 Pack 40/30 Amp Waterproof Relay Switch Harness Set - 12V DC 5-Pin SPDT Automotive Relays 12 AWG Hot Wires - Image 2](https://m.media-amazon.com/images/I/41rJe-qVCDL.jpg)
![OLS 5 Pack 40/30 Amp Waterproof Relay Switch Harness Set - 12V DC 5-Pin SPDT Automotive Relays 12 AWG Hot Wires - Image 3](https://m.media-amazon.com/images/I/511u2ksr+PL.jpg)
![OLS 5 Pack 40/30 Amp Waterproof Relay Switch Harness Set - 12V DC 5-Pin SPDT Automotive Relays 12 AWG Hot Wires - Image 4](https://m.media-amazon.com/images/I/51B7nkLyhVL.jpg)
![OLS 5 Pack 40/30 Amp Waterproof Relay Switch Harness Set - 12V DC 5-Pin SPDT Automotive Relays 12 AWG Hot Wires - Image 5](https://m.media-amazon.com/images/I/51YRtG1LcSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***N on 21 April 2018*

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.

### ⭐⭐⭐⭐⭐ Review
*by I***S on 6 July 2021*

Thanks this product was exactly what we wanted. Thanks again

### ⭐⭐⭐⭐⭐ Review
*by P***T on 27 November 2024*

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!

## Frequently Bought Together

- True MODS 5 Pack 5-Pin 12V Bosch Style Waterproof Relay Kit [Harness Socket] [12 AWG Hot Wires] [SPDT] [30/40 Amp] 12 Volt Automotive Marine Relays for Boats Auto Fan Cars
- 10 Gauge Fuse Holder - 10 AWG Inline Fuse Holder with 40 AMP ATC Blade Fuses (4pack)
- MCIGICM 12 AWG Inline Fuse Holder with 30A ATC/ATO Blade Fuse, 5 Pack

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-08*