Volkswagen Heater

VW heater P/N are: 3Q0963231A 3Q0963231C 3Q0963231E

HV cable P/N is 3Q0971475 or 5Q0971475. LV connector looks like it is Webasto 1J0973714 8P type.

connectors are: HVA 280 KEY_E from TE +HV near to the body, -HV far from the body 1J0973714 1= +12V , 2= GND, 4= LIN

LIN messages for the water heater: Feedback comes on ID48 Byte 0 is power - 13 for 770W, 26 for 1540W.

ID28 is sent for control Byte 0 is power, last bit of byte 1 starts and stops