---
product_id: 50748389
title: "Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics"
brand: "maypole"
price: "C$4394"
currency: NIO
in_stock: true
url: https://www.desertcart.ni/products/50748389-maypole-12v-7-way-bypass-relay-with-audible-buzzer-trailer
store_origin: NI
region: Nicaragua
---

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

**Brand:** maypole
**Price:** C$4394
**Availability:** ✅ In Stock

## Summary

> 🔗 Tow Smarter, Drive Safer – Never Miss a Signal!

## 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?** C$4394 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/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 vehicles and both filament bulb and LED lamp setups.
- • **Audible Indicator Alerts:** Internal buzzer monitors indicators and flashers, muting intelligently during hazard warnings.
- • **UK-Made Quality Assurance:** Crafted in the UK with CE certification, recommended for professional installation.
- • **Smart Circuit Differentiation:** Automatically distinguishes dual voltage tail/brake and tail/fog systems for precise operation.
- • **Seamless 7-Way Lighting Control:** Directly integrates with vehicle circuits for flawless trailer and caravan light management.

## Overview

The Maypole 12V 7 Way Bypass Relay is a precision-engineered towing electrics solution designed to seamlessly control trailer and caravan lighting. 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 CE certified, it ensures reliable, professional-grade performance for safer towing experiences.

## Description

Maypole 12V 7 Way Bypass Relay with Audible Buzzer Trailer and Caravan Towing Electrics

## 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 |
|---------------|-------|
| Manufacturer | Maypole |
| Part number | 3877 |
| Item Weight | 140 g |
| Product Dimensions | 18 x 15.8 x 3 cm; 140 g |
| Item model number | 3877 |
| Colour | Black |
| Style | technical |
| Material | Brass |
| Pattern | Single |
| Power source type | Corded Electric |
| Wattage | 16.4 watts |
| Item Package Quantity | 1 |
| Measurement System | Inch and Metric |
| Plug profile | Screw Mount |
| Specification met | CE |
| Included components | 1 x relay |
| Batteries included? | No |
| Batteries Required? | No |

## 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/614z5+2QwfL.jpg)

## Available Options

This product comes in different **Pattern Name** options.

## 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 . . . . .

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**Shop now:** [https://www.desertcart.ni/products/50748389-maypole-12v-7-way-bypass-relay-with-audible-buzzer-trailer](https://www.desertcart.ni/products/50748389-maypole-12v-7-way-bypass-relay-with-audible-buzzer-trailer)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-01-26*