Glow plug not working

[RWD123]

Good day

Have a couple issues but first issue trying to figure is why glow plugsare not working. Tractor has rebuilt engine with new glow plugs. Noticed in another thread someone posted a picture and in it shows two 70 amp Handouk relays. My tractor has both plugs but nothing is plugged in them are these for the glow plugs? Tractor runs fine once started. 60amp fuse is good and glow plug light comes on.

 

[Roadworthy]

I see nothing about troubleshooting you've done. Do you have voltage at the glow plugs when the glow plug light is on? I'd start there. If you have voltage the new glow plugs may be bad. If you have no voltage you need to determine why.

 

[RWD123]

Just found someone posted the wiring schematics in another thread, the one on the left in the picture is the glow plug relay. Jumpered pin 30 and 87 for 10 seconds and tractor fired up almost instantly, just need to order a relay now.

 

[grsthegreat]

The large box is the display unit. It controls alot of functions including glow plugs. But glad you determined it was the relay. Ikeep a few relays as spare parts.