400E/E420 2.82 rear diff./ speedo wiring question.....

[Dcraig]

Anyone have the electrical wiring details for the diff swap? Bergwerks did the swap and the speedo correction. Over the last 6+ months my console button lights flicker when I press on the brake pedal. There must be a loose connection behind the cluster.

They aren't in business any longer so I don't know where to start. Sort of looks like spaghetti back there. I expected a cleaner job.

Thanks,

Dcraig