Yes if you turn on the ign - you should always get voltage at the glows,but you would need to take a reading fairly quickly (preferably with someone else on the ign switch),even when the light goes out the glows will probably get power for a little time after start.
From memory you should be getting at least 10volts at each glow plug.
Istr having probs with the control box many years ago,but equally could be elec plugs or wiring prob.
Edit to add - of course any glow system fault becomes more noticeable as the temp drops - winter is coming LOL
From memory you should be getting at least 10volts at each glow plug.
Istr having probs with the control box many years ago,but equally could be elec plugs or wiring prob.
Edit to add - of course any glow system fault becomes more noticeable as the temp drops - winter is coming LOL