Hi Folks,
I've narrowed my glow plug problem down to the relay (I think? ) Basic problem is glow plug light doesn't light - and the glow plugs don't heat up.

I've checked the following so far: 80a fuse, power to relay (big wire with nut),
glow plugs, wiring from GP relay to glow plugs --- all of the above test okay.

I have power going to the #15 terminal of the GP relay(this is with the key in the glow position) - but not to any of the other 3 terminals at this small plug. (there are 4 in total including #15)

I took the Gp relay apart & cleaned it up - it was a bit wet - but this didn't make a difference.

Where do I look next? I'm thinking about the other 3 terminals on the small plug. What do they do?

Also, if I was wondering about the availability of a used Gp Relay?

Thanks in Advance

Aivars