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🚛 Tow Smart, Tow Safe — Never Miss a Signal!
The Maypole 12V 7 Way Bypass Relay is a high-performance towing accessory designed to directly connect to your vehicle’s lighting circuits, ensuring reliable control of trailer and caravan lights without adding electrical load. Compatible with most vehicles and lighting types, it features an audible buzzer for indicator monitoring and supports dual voltage systems. Made in the UK and recommended for professional installation, this relay guarantees seamless, safe towing with smart alert functionality.
| ASIN | B07YWZ7KXF |
| Best Sellers Rank | 1,317 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 450 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 👍
S**F
Teamwork
I have two of this . Ordered a second one because the right indicator wasn’t working . The new doing the same thing . Finally I sorted the problem whit two of this one is the left, the other one is the right. Maybe just for me I don’t know . But not working as it’s should .
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 weeks ago
1 month ago