---
product_id: 50748389
title: "Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics"
brand: "maypole"
price: "2054363₫"
currency: VND
in_stock: true
reviews_count: 8
category: "Maypole"
url: https://www.desertcart.vn/products/50748389-maypole-12v-7-way-bypass-relay-with-audible-buzzer-trailer
store_origin: VN
region: Vietnam
---

# Supports filament & LED lamp combos 7-way direct vehicle lighting control Audible buzzer for indicator alerts Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics

**Brand:** maypole
**Price:** 2054363₫
**Availability:** ✅ In Stock

## Summary

> 🚛 Tow Smarter, Not Harder: The Ultimate 7-Way Relay Upgrade

## Quick Answers

- **What is this?** Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics by maypole
- **How much does it cost?** 2054363₫ 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/50748389-maypole-12v-7-way-bypass-relay-with-audible-buzzer-trailer)

## Best For

- maypole enthusiasts

## Why This Product

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

## Key Features

- • **Universal Compatibility:** Works effortlessly with most vehicle types and both filament and LED lighting systems—future-proof your towing setup.
- • **Smart Audible Indicator Alerts:** Internal buzzer monitors flashers and indicators, muting automatically during hazard warnings to keep you informed without distraction.
- • **Seamless 7-Way Lighting Control:** Directly integrates with vehicle circuits for flawless trailer and caravan lighting synchronization.
- • **Dual Voltage Circuit Differentiation:** Handles complex tail/brake and tail/fog systems with precision, ensuring no light gets left behind.
- • **UK-Made Quality & Professional Fitment:** Crafted in the UK with premium brass components; recommended installation by certified auto electricians or tow bar specialists guarantees reliability.

## Overview

The Maypole 12V 7 Way Bypass Relay with Audible Buzzer is a UK-manufactured, high-quality towing electrics solution designed to seamlessly control trailer and caravan lighting. Compatible with most vehicles and lighting types, it features an internal buzzer for indicator monitoring and supports complex dual voltage circuits, ensuring safe and reliable towing performance.

## Description

Buy Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics at desertcart UK. Free delivery on eligible orders.

Review: Easy to understand and install - Worked great on my ford smax, very easily installed
Review: Great upgrade - I upgraded 7pin setup to 13pin setup and this works as treat. It runs my caravan fridge while driving.

## Features

- A 7 way bypass relay is connected directly to the vehicles lighting circuits to control the lights on a trailer and caravan
- Works on most vehicle types and most filament bulb and LED lamp combinations
- Differentiates circuits on dual voltage tail/brake and tail/fog systems
- Monitors indicators, flashers via the internal buzzer, which mutes under hazard warning conditions
- Ancillary flasher or indicator monitor output to panel lamp or additional buzzer
- Made in the UK
- Fitment is recommended by an auto electrician or tow bar fitting centre

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003H5FX6Q |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 26,438 in Automotive ( See Top 100 in Automotive ) 228 in Universal Accessories for Trailer Couplings |
| Colour | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (447) |
| Date First Available | 14 April 2010 |
| Included components | 1 x relay |
| Item Package Quantity | 1 |
| Item Weight | 125 g |
| Item model number | 3877 |
| Manufacturer | Maypole |
| Material | Brass |
| Measurement System | Inch and Metric |
| Part number | 3877 |
| Pattern | Single |
| Plug profile | Screw Mount |
| Power source type | Corded Electric |
| Product Dimensions | 18 x 15.8 x 3 cm; 125 g |
| Specification met | CE |
| Style | technical |
| Wattage | 16.4 watts |

## Product Details

- **Connector type:** Through Hole
- **Contact material:** Brass
- **Contact type:** 7p7t
- **Current rating:** 15 Amps
- **Mounting type:** Screw Mount

## Images

![Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics - Image 1](https://m.media-amazon.com/images/I/313j2CCizAL.jpg)
![Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics - Image 2](https://m.media-amazon.com/images/I/5124QUCO9xL.jpg)
![Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics - Image 3](https://m.media-amazon.com/images/I/51KpryRVuZL.jpg)
![Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics - Image 4](https://m.media-amazon.com/images/I/51qUP7vlj-L.jpg)
![Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics - Image 5](https://m.media-amazon.com/images/I/614z5+2QwfL.jpg)

## Questions & Answers

**Q: Will this work with a 2015 Kia Sportage?**
A: Should work with any car that has 7 pin towing socket already fitted

**Q: Does this work with vehicles with canbus?**
A: I fitted this to my 2009 VW Transporter. It works fine. The unit requires a 12v power supply and I took mine direct from the battery using an in-line fuse. I firstly fitted one that only works on the indicators and that didn’t work. I would recommend this unit.

**Q: Will this work on 2014 Peugeot Partner van?**
A: Could not say 100% for sure but I don't see why not as it is a universal fit and should not interfere with the lighting CANBUS system if fitted to your vehicle. It simply takes low power triggers from each light cable which then activates its own internal power relays fed by an independent 12volt feed that you will need to install to power the unit.. Works a treat on my 59 Qashqai nTec.

**Q: Will this fit 2009 vauxhall insignia estate**
A: It will work, though a 2009 may not actually need one as perhaps not canbus wiring, due to it's age?
But if there's any doubt - I'd say fit one to be on the safe side . . . . .

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to understand and install
*by A***Y on 18 September 2025*

Worked great on my ford smax, very easily installed

### ⭐⭐⭐⭐⭐ Great upgrade
*by S***E on 9 November 2022*

I upgraded 7pin setup to 13pin setup and this works as treat. It runs my caravan fridge while driving.

### ⭐⭐⭐⭐⭐ Relay 7 pin
*by J***H on 29 April 2025*

Thanks works good

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-23*