I tried removing the earth, but no luck, I think either the relay or the control unit is faulty
I'm going to junk the second relay, and the control unit
Have ordered a timer relay that is adjustable, going to fit this where the control unit is.
Should be able to use this to control the original primary glow plug relay, and operate the glow plug light for the duration that the timer is set for
It starts perfectly now, no smoke !
Found the control unit, it is under the steering column on my model.... Just need to figure out which wire is which now !