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The Maypole 12V 7 Way Bypass Relay with Audible Buzzer is a high-performance towing electrics solution designed to seamlessly manage trailer and caravan lighting. Compatible with most vehicles and lighting types, it features smart circuit differentiation and an internal buzzer for indicator monitoring. Engineered in the UK with CE certification, it offers reliable, professional-grade performance and easy installation recommended by auto electricians.
| ASIN | B07YWZ7KXF |
| Best Sellers Rank | 1,043 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 438 Reviews |
| Included Components | 1 x relay |
| Item Type Name | MP3877B 12V 7 Way Bypass Relay |
| Manufacturer | Maypole |
| Manufacturer Part Number | MP3877B |
| 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.
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.
N**T
So easy
Worked Perfectly on a Smart 421 with a manufacturers bike rack that we purchased 2nd hand well happy
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
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.
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
1 month ago
1 day ago