Up for sale is an UNCUT BMW E30 84-87 13 Button OBC On Board Computer Engine Bay Wiring Harness.

Part number: 61121373729

Details: This harness is used in converting EARLY MODEL E30s (84-87) over to a 13 Button OBC. For reference, RealOEM calls this “Wiring theft alarm/bordcomputer”.

This harness is the one that is very hard to find in good shape. It runs from the OBC Module under the drives side dashboard, through the firewall grommet and down to the OBC Horn and Ambient Temp Sensor behind the drivers side front valence.

This harness is commonly destroyed and corroded, but somehow this one made it and it’s in great shape. All connectors present and aren’t brittle.

Please make sure this is what you need before purchasing and let me know if you have any questions.