1979 VW Bus EV Conversion — System Wiring Schematic

Rev R3 · HyPer 9HV / X144 (ISO) · Orion BMS 2 (48S) · 7× Tesla · Elcon 6.6kW · Dual Contactor

1979 VW Bus EV Conversion — System Wiring Schematic (Rev R3) HyPer 9HV / X144 ISO · Orion BMS 2 (48S) · 7× Tesla 5.3kWh · Elcon 6.6kW · Dual Contactor Battery Pack 7× Tesla Model S · 42S 126V – 176V · ~37 kWh PACK+ (M1+) PACK− (M7−) HVBD4AXR Disconnect F4 10A · Precharge Relay → B+ Pre F1 500A/220V DHAB S/155 Current Sensor F3 20A DC-DC 1kW GV200PA-1 Main (+) · K1-25/26 HV_BUS_POS F2 60A · Charger UPSTREAM · plug-and-charge F5 25A · LEV100 CanEV Heater (driving only) REC35P1KX Neg (−) · via interposing relay HV_BUS_NEG HV− returns (charger, DC-DC, heater) X144 Controller (ISO) HyPer-Drive · Isolated Logic B+ B− K1-24: Key Switch (12V) K1-25/26: GV200 Coil K1-11: Throttle (EVW-TH-HALL) K1-5/6: Forward / Reverse K1-18/19: Profile 2/3 (regen) K1-4: Interlock K1-2/13: CAN Bus C (250K) K1-3↔14: 120Ω jumper K1-21/33: Encoder Sin/Cos K1-9: Encoder GND K1-32: Motor Thermistor K1-35: +5V Out (enc+throttle) UVW HyPer 9HV Motor Encoder · Thermistor · 3-Phase Orion BMS 2 (48S) On shelf in CR battery box Pin 1: Always On 12V Pin 2: READY (ignition) Pin 3: CHARGE (J1772) Pin 6: Charger Safety (WD) Pin 7: Disch Enable → interposing relay → REC35 (WD) Pin 8: Charge Enable (WD) Pin 10: Fan Enable (175mA) Pin 12: Ground Pin 13/14: J1772 CP / Prox Pin 26: Kill Authority (WD) CAN1 (18/19): Bus A 500K CAN2 (20/21): Bus B 250K Cell taps: Conn 1+2 → 7 modules Thermistors: T1–T8 Current sensor: DHAB 4-wire Pin 7 Pin 26 → Perm Chain 12V → Ignition → Inertia → Pin26 Relay → X144 K1-24 (12V only!) Speedhut SOC Bus A · 500K Elcon Charger Bus B · 250K · CAN-3865 Touch Display Bus C · 250K Tach (EVW-CBTH9) Bus C · 120Ω SW1 J1772R-V2 32A Receptacle CP/Prox → BMS 13/14 12V System NLX24 Battery DC-DC → 14V/72A Legend: HV+ (2/0 AWG) HV− (2/0 AWG) Precharge / Branch CAN Bus Signal / Control 3-Phase (U/V/W) (WD) = Watchdog backed All HV cable: 2/0 AWG orange w/ red(+) / black(−) boots · CAN: twisted pair shielded · 60Ω per bus · ISO logic: K1-24 max 24V! · Charger+DC-DC UPSTREAM of GV200 · Heater DOWNSTREAM
Reference only — verify all connections against actual hardware and primary source manuals before wiring.
Compare with: EV West Hyper9HV Universal Battery Schematic · EV West Hyper 9 Kit Schematic