Review on 🔌 EHDIS 4 Pin 12v 40amp Spst Car Relay - Model No.: JD2912-1H-12VDC 40A 14VDC, Pack of 2, Auto Switches & Starters by Matt Patnaik

the GP light came on during operation and later went off at all on start up). I replaced the glow plug timer (e.g. $90) and no change (very disappointed I had to check the voltmeter at 12 volts as I later did). Then I ordered the wrong relay. I then ordered and installed the above relays and they work great, very satisfied. To fix a faulty glow plug circuit: Remove the side panel (4 screws). See relay kit. In the bottom group of four, the one on the left is the glow plug timer - use a voltmeter and a 12 volt supply to check for continuity between the two contacts for five seconds after power is applied and then turned off. Then check the relay and see if 12 volts make continuity between the two contacts. In my case the relay was faulty and could have easily been fixed if I had gone that route first. Good luck and have fun with this cute tractor.