Is this flasher realy on/off at all times once power is supplied to unit?

First of all it is not a flasher relay as does not have a timer installed inside it is a standard relay with normally closed or open contacts and when power supplied to it the contacts will operate depending on which tab you have wired to will make or break the supply to the device being powered I use for switching vac pumps on braking systems for locos on a small railway.

Is this a latching relay? Push a button to start, then push a button to stop?

noo. you don't have to push any button , it start automatically and stop automatically ,, ( by current )

Will it be able to switch a 36v main with a 12v signal input?

It's rated 12 volts so unlikely. Fine for car spot lights or in my case heated windscreen.

From what I know of relays, the diagram on this listing shows incorrect wiring. Can you confirm please?

Hello, the diagram on this listing shows is correct, pin85 and pin86 can connect battery and ground in reverse

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Gebildet 4pcs JD1912 Car Relay Harness 12V 40A 4 Pin SPST with Built-in Diode for Automotive Truck Van Motorcycle Boat

Gebildet 4pcs JD1912 Car Relay Harness 12V 40A 4 Pin SPST with Built-in Diode for Automotive Truck Van Motorcycle Boat

Product ID: 64439284

Details

Connector type
4 Pin Terminal
Contact material
Silver Alloy
Contact type
Normally Open
Current rating
40 Amps
Mounting type
Wall Mount

⚡40A high current capacity

⏱️Ultra-fast 15ms operate time

🛡️Built-in diode for voltage protection

R511

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Description

⚡ Drive Smart, Switch Fast, Stay Protected!

BUILT IN DIODE SHIELD - Protects your precious electronics from damaging voltage spikes—because your ride deserves the best defense.
SILVER ALLOY CONTACTS - Premium Ag alloy contacts guarantee ultra-low resistance (≤100mΩ) and long-lasting performance over 100,000 electrical cycles.
COMPACT VERSATILE FIT - Designed for seamless integration in cars, trucks, motorcycles, and boats with standard 12V DC systems—upgrade your gear without hassle.
LIGHTNING FAST SWITCHING - Operate and release times under 15ms keep your circuits responsive and reliable in every drive.
POWER THROUGH WITH 40 AMPS - Handles heavy-duty automotive loads effortlessly, ensuring your vehicle’s electrical system never skips a beat.

The Gebildet 4pcs JD1912 Car Relay Harness is a high-performance 12V 40A 4-pin SPST relay set featuring built-in diodes for voltage spike suppression, silver alloy contacts for durability, and ultra-fast switching times. Engineered for automotive, truck, motorcycle, and boat applications, it offers reliable operation across extreme temperatures and humidity, ensuring your vehicle’s electrical system runs smoothly and safely.

Specifications

ASIN	B07BK4DBPB
Best Sellers Rank	1,331 in Automotive ( See Top 100 in Automotive ) 1 in Car Relays
Brand	Gebildet
Coil Resistance	73.33 Ohms
Coil Voltage	1.8 Volts (DC)
Connector Type	4 Pin Terminal
Contact Current Rating	40 Amps
Contact Material	Silver Alloy
Contact Type	Normally Open
Country Of Origin	China
Current Rating	40 Amps
Customer Reviews	4.6 4.6 out of 5 stars (462)
Manufacturer	Gebildet
Manufacturer Part Number	DE127
Minimum Switching Voltage	8 Volts (DC)
Model Number	1
Mounting Type	Wall Mount
Number of Items	4
Number of Packs	4
Operating Time	0.02 Seconds
Operation Mode	Electric
Release Time	0.01 Seconds
Specification Met	dc
UPC	646040294544
Wattage	1.8 watts

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R511

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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