---
product_id: 164435024
title: "Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics"
brand: "maypole"
price: "€ 53.89"
currency: EUR
in_stock: true
reviews_count: 13
category: "Maypole"
url: https://www.desertcart.nl/products/164435024-maypole-12v-7-way-bypass-relay-with-audible-buzzer-trailer
store_origin: NL
region: Netherlands
---

# 7-way direct lighting control Audible indicator buzzer UK-made quality Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics

**Brand:** maypole
**Price:** € 53.89
**Availability:** ✅ In Stock

## Summary

> 🚛 Tow Smart, Tow Confident – Never Let Your Lights Leave You in the Dark!

## 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?** € 53.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/164435024-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

- • **Trusted UK Engineering:** Proudly made in the UK, recommended by professionals for easy, reliable fitment.
- • **Universal Compatibility:** Works effortlessly with most vehicles and both filament & LED lamps—no compatibility headaches.
- • **Audible Indicator Alerts:** Built-in buzzer monitors indicators and flashers, muting automatically during hazards to keep you informed.
- • **Seamless Trailer Light Sync:** Directly connects to vehicle circuits for flawless trailer and caravan lighting integration.
- • **Smart Circuit Differentiation:** Handles dual voltage tail/brake and tail/fog systems with precision for reliable signaling.

## Overview

The Maypole 12V 7 Way Bypass Relay is a professional-grade towing electrics solution designed to seamlessly integrate trailer and caravan lighting with your vehicle’s circuits. Compatible with most vehicles and lighting types, it features an audible buzzer for indicator monitoring and smart circuit differentiation for dual voltage systems. Made in the UK and highly rated by users, it ensures hassle-free installation and reliable performance, preventing vehicle system errors during towing.

## Description

Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics : desertcart.co.uk: Automotive

Review: Simple and Effective - Nice solution and easy to wire up, saved me sourcing the dedicated kit (Which was more expensive and very long delays in ordering) Instructions were clear, and all worked fine the first time post installation.
Review: Perfect item that stops the cars brain having a fit. - Fitted this to my 2009 Ford Focus, so as not to upset the cars brain when I fitted my tow-bar, works perfectly and great price.

## 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 | B07YWZ7KXF |
| Batteries Required? | No |
| Best Sellers Rank | 1,915 in Automotive ( See Top 100 in Automotive ) 3 in Car Relays |
| Colour | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (388) |
| Date First Available | 8 Oct. 2019 |
| Included components | 1 x relay |
| Item Package Quantity | 1 |
| Item Weight | 110 g |
| Item model number | MP3877B |
| Manufacturer | Maypole |
| Measurement System | Metric |
| Part number | MP3877B |
| Plug profile | Surface Mount |
| Product Dimensions | 4 x 4.5 x 11 cm; 110 g |
| Specification met | CE |
| Style | Single |
| Wattage | 5 watts |

## Product Details

- **Connector type:** Solder
- **Contact material:** Steel
- **Contact type:** Normally Open
- **Current rating:** 15 Amps
- **Mounting type:** Surface 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/715ukuabYqL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: No instructions**
A: Hello, you can find them on the Maypole website under Product Instructions

**Q: Is this cambus suitably**
A: It will not connect directly with cantus but if you can access the individual lamp wiring at the tail lamps, it will connect to and work with that. You will also need to provide a permanent fused 12v supply

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simple and Effective
*by J***S on 5 August 2025*

Nice solution and easy to wire up, saved me sourcing the dedicated kit (Which was more expensive and very long delays in ordering) Instructions were clear, and all worked fine the first time post installation.

### ⭐⭐⭐⭐⭐ Perfect item that stops the cars brain having a fit.
*by A***R on 21 April 2025*

Fitted this to my 2009 Ford Focus, so as not to upset the cars brain when I fitted my tow-bar, works perfectly and great price.

### ⭐⭐⭐⭐⭐ Fantastic
*by G***H on 19 November 2025*

Can’t read this high enough straight swap from my old one that burnt out and works perfect no more light problems for me

## Frequently Bought Together

- Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics, Black
- Maypole 7 Pin 12N Pre-Wired Towbar Socket Assembly Complete with 1.5m Cable, Flexible Gasket and Mounting Plate, Black
- QitinDasen 50Pcs Quick Splice Wire Connectors Set, Quick Splice Terminal, Electrical Wire Splice Connector, Quick Connector Branch Connector (25Pcs Red + 25Pcs Blue)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.nl/products/164435024-maypole-12v-7-way-bypass-relay-with-audible-buzzer-trailer](https://www.desertcart.nl/products/164435024-maypole-12v-7-way-bypass-relay-with-audible-buzzer-trailer)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-20*