I received the jd2912 relays. what email address do i email?

You can contact son of wil through Amazon.

so in the picture the top red wire that is 87 goes to the motor to turn it on but it shows in the picture red turns to black and it is ground?

The red wire goes to the device that you want to turn on and the black to that Device

what gauge wire on battery terminals

I used a 14 gauge wire to the battery

I have a positively grounded (+ ground) system. The relay coil should still operate correct?

If you are stating the chassis is battery plus, then it should work, but would need to cycle your negative signals to control coils. John Deere 60 tractors have a positive chassis methodology, so might need to investigate how they operate to verify implementation.

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⚡ Power your ride with precision and protection!

PLUG PLAY PRECISION - Color-labeled wires and 4-pin SPST design ensure hassle-free, error-proof installation.
BUILT IN VOLTAGE SHIELD - Integrated diode protects your vehicle’s electrical system from damaging voltage spikes.
ENGINEERED FOR ENDURANCE - Rated for 100,000 electrical cycles and up to 10 million mechanical operations—reliability you can trust.
EXTREME CONDITIONS READY - Operates flawlessly from -55°C to +70°C, perfect for any climate or environment.
POWER THROUGH WITH CONFIDENCE - Supports heavy 40A loads for demanding automotive and marine applications.

The Gebildet JD1912 Car Relay Harness is a robust 12V 40A 4-pin SPST relay socket set designed for automotive, truck, van, motorcycle, and boat applications. Featuring an integrated diode for voltage spike suppression, color-coded wiring for easy installation, and exceptional durability with up to 100,000 electrical operations, it ensures reliable performance across extreme temperatures and conditions.

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Connector Type	Spade
Contact Material	Silver Alloy
Contact Type	Normally Open
Current Rating	40 Amps
Mounting Type	Socket Mount
Brand	Gebildet
Operation Mode	Manual
Wattage	4.8E+2
Coil Voltage	12 Volts
Contact Current Rating	40 Amps
Maximum Switching Current	40 Amps
Minimum Switching Voltage	8 Volts
Upper Temperature Rating	70 Degrees Celsius
UPC	694090222994
Manufacturer	Gebildet
Item Weight	4.6 ounces
Package Dimensions	9.02 x 2.64 x 1.3 inches
Item model number	E079
Is Discontinued By Manufacturer	No
Manufacturer Part Number	E079

Gebildet JD1912 Car Relay Harness 12V 40A 4 Pin SPST Harness Sockets with Color-Labeled Wires for Automotive Truck Van Motorcycle Boat (Pack of 2)

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