---
product_id: 164435024
title: "Maypole 12V 7 Way Bypass Relay with Audible Buzzer"
brand: "maypole"
price: "₨21021"
currency: LKR
in_stock: true
category: "Maypole"
url: https://www.desertcart.lk/products/164435024-maypole-12v-7-way-bypass-relay-with-audible-buzzer
store_origin: LK
region: Sri Lanka
---

# 7-way multi-circuit bypass 12V DC power compatibility Audible indicator buzzer Maypole 12V 7 Way Bypass Relay with Audible Buzzer

**Brand:** maypole
**Price:** ₨21021
**Availability:** ✅ In Stock

## Summary

> 🚛 Tow Smarter, Not Harder: The Ultimate 7-Way Relay for Next-Level Towing Confidence

## Quick Answers

- **What is this?** Maypole 12V 7 Way Bypass Relay with Audible Buzzer by maypole
- **How much does it cost?** ₨21021 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/164435024-maypole-12v-7-way-bypass-relay-with-audible-buzzer)

## 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 & LED lighting systems—future-proof your tow setup.
- • **Audible Indicator Alerts:** Internal buzzer monitors indicators and flashers, muting only during hazard mode to keep you informed.
- • **UK-Made Quality & Safety:** Crafted in the UK with no extra load on your vehicle’s electrical system—professional installation recommended.
- • **Dual Voltage Smart Support:** Automatically differentiates dual voltage tail/brake and tail/fog circuits for precise lighting control.
- • **Seamless Trailer Lighting Control:** Directly connects to vehicle circuits for flawless trailer and caravan light synchronization.

## Overview

The Maypole 12V 7 Way Bypass Relay with Audible Buzzer is a UK-manufactured, surface-mount automotive relay designed for trailer and caravan towing electrics. It supports 12V DC systems, handles up to 15 amps, and ensures compatibility with most vehicle types and lighting setups, including filament and LED bulbs. Featuring an internal buzzer for indicator monitoring and dual voltage circuit differentiation, it protects your vehicle’s electrical system by imposing no extra load. Ideal for professional installation, this relay enhances towing safety and reliability.

## Description

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

## Features

- Direct Vehicle Connection: A 7 way bypass relay is connected directly to the vehicles lighting circuits to control the lights on a trailer and caravan
- Wide Compatibility: Works on most vehicle types and most filament bulb and LED lamp combinations
- Dual Voltage System Support: Differentiates circuits on dual voltage tail/brake and tail/fog systems
- Indicator Monitoring: Monitors indicators and flashers via the internal buzzer, which mutes under hazard warning conditions
- Additional Output Options: Ancillary flasher or indicator monitor output to panel lamp or additional buzzer
- UK Manufacturing: Made in the UK
- Professional Installation Recommended: Fitment is recommended by an auto electrician or tow bar fitting centre
- No Extra Load on Vehicle: The relays do not put any extra load onto the vehicles lighting system, protecting your vehicle's electrical circuits

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07YWZ7KXF |
| Best Sellers Rank | 1,542 in Automotive ( See Top 100 in Automotive ) 1 in Car Relays |
| Brand | Maypole |
| Coil Voltage | 12 Volts (DC) |
| Connector Type | Solder |
| Contact Material | Steel |
| Contact Type | Normally Open |
| Current Rating | 15 Amps |
| Customer Reviews | 4.5 4.5 out of 5 stars (431) |
| Included Components | 1 x relay |
| Item Highlight | For Trailer and Caravan Towing Electrics |
| Item Type Name | MP3877B 12V 7 Way Bypass Relay |
| Manufacturer | Maypole |
| Manufacturer Part Number | MP3877B |
| Maximum Switching Voltage | 12 Volts (DC) |
| Minimum Switching Voltage | 12 Volts (DC) |
| Model Number | MP3877B |
| Mounting Type | Surface Mount |
| Number of Items | 1 |
| Operation Mode | Automatic |
| Product Warranty | 12 months |
| Specification Met | CE |
| 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 - Image 1](https://m.media-amazon.com/images/I/41cf1DfsahL.jpg)
![Maypole 12V 7 Way Bypass Relay with Audible Buzzer - Image 2](https://m.media-amazon.com/images/I/71RHDmS1XAL.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

## 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)

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

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-09-13*