[DannY0909]

Hello all, my head is going to explode!! I have an r53 with Harmon kardon system. Was working great. Took out the original put a Sony head unit in. No sound, bought a Harmon kardon enabler, put it in, no sound. I'm beyond stressed. Looking for advice please help me.

 

[knt]

Not an expert, but does it have the same wiring harness with the new unit?

 

[DannY0909]

Not entirely sure what you mean, but the enabler has two iso connectors which plug into head unit harness, it works fine just no sound. I'm so perplexed.