Power supply +30, main fuse box in the engine bay

List of components

No.	Name Location	Illus.
	Components
1	Battery in engine bay
68	Horn relay, in underhood electrical centre 342
83	Relay, windscreen wiper, in underhood electrical centre 342
156	A/C compressor relay, diesel: in engine bay electrical centre 342 (petrol: in main fuse box 727 in front of battery)
229	Main relay, engine control system diesel: in engine bay electrical centre 342 (petrol: in main fuse box 727 in front of battery)
432b	Windscreen washer fluid pump relay, in underhood electrical centre 342
432c	Relay, washer fluid pump, rear window in underhood electrical centre 342
517	Relay, +50, in underhood electrical centre 342
641	Relay, preheating, in underhood electrical centre 342
667	High pressure headlamp washer fluid pump relay in underhood electrical centre 342
709	Full/half speed windscreen wiper relay in underhood electrical centre 342
757F	Relay, +15, UEC, in underhood electrical centre 342
	Crimp connections
J1	Approx. 210 mm from branching point grounding point G30 towards left headlamp
J9	Approx. 150 mm from branching point grounding point G31 towards left headlamp
J12	Approx. 130 mm from branching point grounding point G31 towards LH headlamp
J97	4D/5D: Approx. 110 mm from branching of grounding point G33P/S towards the left rear door CV: Approx. 70 mm from branching point grounding point G33P/S towards the LH rear door
	Grounding points
G2	On the side of the left structure strut by the connector bracket	B207 Z18XE B284 Z19
G7	Z18XE: On support bracket under intake manifold Z19: On starter motor lower retaining bolt	Z18XE Z19
G25	On the left engine mounting B284 AUT: On a bracket on the front of the gearbox
G30A	Front grounding point on the side plate above the left wheel housing
G31	In the engine bay on the side plate above the right wheel housing
G33S	On the floor below the left A-pillar