Stove Newhome 600si cooker?

I need to replace the oven light bulb but not sure how to remove the glass. Does it require the removal of the lining or is there a simpler way?

Also the grill only seems to operate at one level - on. It is not varied by the front control knob. Any thoughts?

Also the grill spark ignition wire has became detached from the ignitor. All works when connected but the connector is passed its best. Is there a simple replacement?

Is there a good source of spares for this model?

Apart from that it's a great cooker.

Thanks