Ah, yes. My heater matrix isn't currently connected. It was being replaced by an electrical heat/demist system but it's sat back into place empty right now.
The box sections carry the spotlamp brackets. A bit sturdy ain't they?! Not my idea, I bought it like that. At least the lamps don't vibrate, even thought they don't have tie straps to the bonnet. It can be done better but it's staying like that for now.