---
product_id: 37076444
title: "True MODS 6 Pack 4-Pin 12V Bosch Style Fused Relay Switch Kit [Interlocking Harness Socket Holder] [14 AWG Hot Wires] [SPST] [30 Amp] 12 Volt Automotive relays with Fuse for Auto Cars"
brand: "online led store"
price: "185 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Online Led Store"
url: https://www.desertcart.pl/products/37076444-true-mods-6-pack-4-pin-12v-bosch-style-fused
store_origin: PL
region: Poland
---

# 30A high switching power Bosch style 4-pin SPST relay Heavy-duty 14 AWG fused wiring True MODS 6 Pack 4-Pin 12V Bosch Style Fused Relay Switch Kit [Interlocking Harness Socket Holder] [14 AWG Hot Wires] [SPST] [30 Amp] 12 Volt Automotive relays with Fuse for Auto Cars

**Brand:** online led store
**Price:** 185 zł
**Availability:** ✅ In Stock

## Summary

> 🔧 Power up your ride with pro-grade relays that keep you ahead of the pack!

## Quick Answers

- **What is this?** True MODS 6 Pack 4-Pin 12V Bosch Style Fused Relay Switch Kit [Interlocking Harness Socket Holder] [14 AWG Hot Wires] [SPST] [30 Amp] 12 Volt Automotive relays with Fuse for Auto Cars by online led store
- **How much does it cost?** 185 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/37076444-true-mods-6-pack-4-pin-12v-bosch-style-fused)

## 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 6-Pack Kit:** Everything you need—relays, harnesses, and fuses—to power multiple projects at once.
- • **Built-In Fuse Protection:** Integrated 30A blade fuse safeguards your circuits from overloads.
- • **Heavy-Duty 14 AWG Hot Wires:** Thick gauge wiring guarantees durability and optimal current flow.
- • **Bosch-Style 4-Pin SPST Design:** Industry-standard relay ensuring seamless compatibility and performance.
- • **Reliable 30 Amp Switching Power:** Handles high current loads with ease for your automotive upgrades.

## Overview

The True MODS 6 Pack 4-Pin 12V Bosch Style Fused Relay Switch Kit offers six high-quality automotive relays with built-in 30A blade fuses and heavy-duty 14 AWG wiring. Designed for 12V systems, these Bosch-style SPST relays deliver reliable 30 Amp switching capacity, perfect for powering fans, pumps, and other vehicle accessories with enhanced circuit protection and durability.

## Description

Buy True MODS 6 Pack 4-Pin 12V Bosch Style Fused Relay Switch Kit [Interlocking Harness Socket Holder] [14 AWG Hot Wires] [SPST] [30 Amp] 12 Volt Automotive relays with Fuse for Auto Cars: Starter - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: awesome for anything - Great product to keep around the garage!
Review: works for me - I bought few of these 30amps with fuses 30amps with out fuses, 60 and 80 amps to install in my drag truck making it a street weekend truck. Cheaper buying them here than going to local parts store. I have 4 ground wires going to the body in different location. Power items - dual fans, water pump, fuel pump, transmission cooler mounted under the truck. All is on a ground wire coming off grounded wire - not like most people will just ground a item to the body. I like to make sure I have a very good ground. Also like to make sure when the truck is running at idle I have14 volts inside the truck cab at the ignition switch and power going out of it. The switches work for me no problem with any Update 10/26/2019 no problems with the relays. I have not blown a fuse yet. Some people could be having problems, Not a good ground source, wiring gauge to small, Amp draw on start up exceed 30 amps on. - On fans amp draw can be high when 1st turn on. All power source should be check amp draw on start up so you can match the relay to amps being used. I have 4 ground wiring. I have dual fans 2800 cfm each, fuel pump 14gp, water pump, trans fan cooler, My fans on start up both pull 32 to 35 amps then runs at about 22amps - So my relays on the fans I'm using 60/80 amps. Everything els I'm using 30amp relays. at idle with these on fans both, fuel pump, water pump, trans cooler fan is 30 amp relay my amp draw is 68 amps. For some of the people having problems I hope this help. My wiring gauge 8 on the front fans, 10 on the rest. I'm not using the the wiring that came with it.

## Features

- Built in fuse socket with included 30A blade fuse with heavy duty 14AWG wires for main contact.
- Bosch style 4-Pin SPST (Single Pole Single Throw) Relay.
- 12VDC (14V Max) and 30A High Switching Capability.
- Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Blue - Output N/O (87).
- Set includes 6 relays, 6 relay harnesses, and 6 blade fuses.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01NBAO1SA |
| Best Sellers Rank | #46,366 in Automotive ( See Top 100 in Automotive ) #17 in Automotive Replacement Starter Relays |
| Brand | ONLINE LED STORE |
| Brand Name | ONLINE LED STORE |
| Coil Resistance | 80 Milliohms |
| Coil Voltage | 12 Volts |
| Connector Type | Quick Connect |
| Contact Current Rating | 30 Amps |
| Contact Material | Silver Plated Copper |
| Contact Type | Normally Open |
| Current Rating | 30 Amps |
| Customer Reviews | 4.7 out of 5 stars 2,328 Reviews |
| Item Weight | 12.8 ounces |
| Manufacturer | ONLINE LED STORE |
| Maximum Switching Current | 30 Amps |
| Minimum Switching Voltage | 12 Volts (DC) |
| Mounting Type | Panel Mount |
| Operation Mode | Automatic |
| UPC | 816165023880 |
| Wattage | 18 watts |

## Product Details

- **Connector Type:** Quick Connect
- **Contact Material:** Silver Plated Copper
- **Contact Type:** Normally Open
- **Current Rating:** 30 Amps
- **Mounting Type:** Panel Mount

## Images

![True MODS 6 Pack 4-Pin 12V Bosch Style Fused Relay Switch Kit [Interlocking Harness Socket Holder] [14 AWG Hot Wires] [SPST] [30 Amp] 12 Volt Automotive relays with Fuse for Auto Cars - Image 1](https://m.media-amazon.com/images/I/81FVp-H-BUL.jpg)

## Questions & Answers

**Q: Can I use a smaller fuse?**
A: Yes, you totally can.  The overall load through the circuit should be about 80% of the rating of the fuse.  Hope this helps.

**Q: is the fuse for output power to the accessory ?**
A: The fuse is protecting the source voltage supply on the #30 terminal. In theory this also protests the accessory wired to the #87 terminal because if the source sees a spike and blows the fuse the output will not see any current. To be safe you can also fuse anything connected to the accessory side of the relay on the #87 terminal independently.

**Q: I have two 18w led aux lights hooked up to ome of these and its jimped into my parking lights. Why is ut buzzing?**
A: The only thing i can think is the holding coil. Do the lights flicker

**Q: These relays have built -in peak suppression diode?**
A: No, these relays do not have built in flyback diodes.

## Customer Reviews

### ⭐⭐⭐⭐⭐ awesome for anything
*by K***D on October 16, 2025*

Great product to keep around the garage!

### ⭐⭐⭐⭐⭐ works for me
*by J***1 on December 14, 2018*

I bought few of these 30amps with fuses 30amps with out fuses, 60 and 80 amps to install in my drag truck making it a street weekend truck. Cheaper buying them here than going to local parts store. I have 4 ground wires going to the body in different location. Power items - dual fans, water pump, fuel pump, transmission cooler mounted under the truck. All is on a ground wire coming off grounded wire - not like most people will just ground a item to the body. I like to make sure I have a very good ground. Also like to make sure when the truck is running at idle I have14 volts inside the truck cab at the ignition switch and power going out of it. The switches work for me no problem with any Update 10/26/2019 no problems with the relays. I have not blown a fuse yet. Some people could be having problems, Not a good ground source, wiring gauge to small, Amp draw on start up exceed 30 amps on. - On fans amp draw can be high when 1st turn on. All power source should be check amp draw on start up so you can match the relay to amps being used. I have 4 ground wiring. I have dual fans 2800 cfm each, fuel pump 14gp, water pump, trans fan cooler, My fans on start up both pull 32 to 35 amps then runs at about 22amps - So my relays on the fans I'm using 60/80 amps. Everything els I'm using 30amp relays. at idle with these on fans both, fuel pump, water pump, trans cooler fan is 30 amp relay my amp draw is 68 amps. For some of the people having problems I hope this help. My wiring gauge 8 on the front fans, 10 on the rest. I'm not using the the wiring that came with it.

### ⭐⭐⭐⭐⭐ Great price
*by K***E on June 24, 2024*

Used these mainly because I like how they attach to eachother for easy mounting and able to keep wiring clean. Having the fuse built into the relay is a cool feature. Wire is cca for those who are wondering. I have these powering low amp products( led lighting, starlight) and have no issues. Very happy with these relays.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.pl/products/37076444-true-mods-6-pack-4-pin-12v-bosch-style-fused](https://www.desertcart.pl/products/37076444-true-mods-6-pack-4-pin-12v-bosch-style-fused)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-02-09*