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HKA Wiring
Below is the wiring schematic for the HKA (A39) module in the F10/F11 and the F01/F02 4-zone climate control.
Very simple.
1. Can BUS wires link the HKA with IHKA (Front Climate Controller)
2. 12VDC power from the rear fuse box
3. Single PWM wire to the rear blower
4. Several wires over to each floorboard rear heater/stratification/temp sensor
5. 2 wires for the orange button/display
6. 2 wires for ambient lighting (B58 only)
Note: If you are replacing the rear panel than has only heated seat buttons, with an A39 module, once coded for 4-zone, A39 will drive the rear seat heating modules
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