TDI-Power said:
Update on progress:
The breakup was due to faulty harness. (Have you heard that one before? ;-)) Found that alarm GND (DWA-GND) wasn´t connected to DWA-GND. This resulted in breakups as soon as a door opened, a light turned on or ignition started.
There's many installations out there that don't have the alarm wire connected at all. I suspect you have the "proper" ground connection missing or connected to the wrong place, and by connecting a ground to the alarm pin you are providing an alternative ground which is making the system work, but you may still have a fault in the adapter.
Many, maybe even most, of the adapters available on the market for converting from Symphony/Concert/Chorus to RNS-E contain wiring errors and/or missing wires. The manufacturers just don't seem to care that their products are wrong - if they did they would have corrected the faults by now!
I'm glad you also found your incorrectly wired amplifier connections - I suspected you had a problem in that area which is why I asked which speakers were affected.
People who have found broken GPS antenna connectors on their RNS-E have opened it up and re-soldered it, maybe that's what you (or get a friend who's an EE to) need to do with your antenna connector?
Do you still have the problem that your unit won't play CD's? Will it read the navigation DVD?