AUDIO AND ANTENNA — Audio — Wiring Diagram — LHD Model (Supplement-VII)

LHD audio wiring. AUDIO UNIT M22 has two internal variants shown on the same schematic: • '4 SPEAKER SYSTEM AND NATS' (gas-only, top trim) — includes NATS authorisation line W/B back to NATS IMMU M146. • '2 AND 4 SPEAKER SYSTEM' (base/mid trim) — no NATS link. Power supplies: • Constant memory (clock + station presets): BATTERY → 10A fuse position 24 → 22U cell = L/B • Audio main (when ignition ACC/ON): 15A fuse position 10 → 17U cell = B Speaker complement varies by trim: • Base: 2-speaker (front only) • Mid: 4-speaker (front + rear) • Top: 4-speaker + 2 tweeters (TW tag) — 6 speakers total NATS-equipped audio refuses to operate without valid IMMU handshake — anti-theft protection.