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🚛 Light up your tow game with smart, silent precision!
The Maypole 12V 7 Way Bypass Relay is a UK-manufactured, surface-mount relay designed for trailer and caravan towing electrics. It connects directly to vehicle lighting circuits, supporting both filament and LED lamps across most vehicle types. Featuring a built-in audible buzzer for indicator monitoring and dual voltage system compatibility, it ensures safe, reliable lighting without adding load to your vehicle’s electrical system. Ideal for professional installation, it’s the trusted choice for seamless towing light control.
| ASIN | B07YWZ7KXF |
| Best Sellers Rank | 1,426 in Automotive ( See Top 100 in Automotive ) 1 in Car Relays |
| Brand | Maypole |
| Coil Voltage | 12 Volts (DC) |
| Connector Type | Solder |
| Connector type | Solder |
| Contact Material | Steel |
| Contact Type | Normally Open |
| Contact material | Steel |
| Contact type | Normally Open |
| Current Rating | 15 Amps |
| Current rating | 15 Amps |
| Customer Reviews | 4.5 out of 5 stars 455 Reviews |
| Included Components | 1 x relay |
| 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 |
| Mounting type | Surface Mount |
| Operation Mode | Automatic |
| Product Warranty | 12 months |
| Specification Met | CE |
| Wattage | 5 watts |
X**X
Perfect
Used to replace an identical unit, easy to wire, works great and when trailer not attached, doesn’t beep so no need to keep disconnecting it
J**S
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.
G**R
Used for over a year and still operating perfectly
I've had this fitted for over a year now (I've only just seen it in my Amazon review pile) as I needed it for my Thule bike rack. It works well, it still works well and I'm glad I purchased it. In my particular case I modified it a little as I had to disable the buzzer as the noise was causing the dog to bark/cry every time I put the indicator on. The change I made had no effect on the functionality of the relay.
A**R
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.
D**E
Maypole trailer wiring kit
It's a quality item but it doesn't come with any wiring diagrams so you need to know trailer wiring or do what most will do and look on Google
S**E
Did the Trick👍
Arrived in 24 hours bailing us out and allowing us to continue our holiday 350 miles from home 👍
A**R
Maypole
Audible indicator not working on it.
J**T
A Top Seller
I have fitted this to my van i havnt tried this item yet but I am sure it will work fine I am very happy with the item and good delivery
A**R
Brilliant device
This item is brilliant on my daughters van with the battery under the seat. Works well, and has a very good range even though its under the seat
P**É
Très bon produit
Très bon produit ,très facile à comprendre et à monter à acheter sans problème
A**Y
Ottimo
Ottimo prodotto
X**R
Feina per instal.lar però funcionament OK
Instal.lat en un renault laguna substituint el mateix model. Porta feina la instal·lació però els llums del remolc ara van bé. A més aquest model fa uns pitidos els intermitents quant està el remolc connectat
M**M
Easy to install
Priceworthy
Trustpilot
2 months ago
1 week ago