so far so good
Mike,I have Garmin 3006C (yep, the older sibling of your unit). I bought it on closeout for around 600 bucks. It worked great but I had a screen fogging issue and returned it under warranty last fall. Garmin sent me a new (refurbed) unit which arrived within three days (don't know how they did it).One problem, the Lake Michigan Map Source data card was keyed to the serial number of the old unit. I had purposely sent the card along with the old unit hoping the techs would take care of me.Nope, I fired up the unit last Friday and it wouldn't recognize the map. Seeing as it was now the weekend, Garmin tech support was not available. I had to wait until yesterday to finally make contact and fix the problem. I have to say this was somewhat frustrating.I splash the boat today after spending the last couple of weeks mounting our new GMR18 radar on a PYI stern pole and fixing a bunch of crappy wiring on the boat. One example was a long UNFUSED power lead from the battery switch to the DC power panel (a fire waiting to happen).Anyway, as was suggested on this site and contrary to Garmin's manual, I cut the radar wires to make the feed easier, reconnected via a terminal block, and crossed my fingers.Damn, everything fired right up including the hookup to my Uniden 525 DSC VHF radio. This feature is SO COOL.I don't know about the newer units but this setup fits my needs just fine.I'd be happy to let you check it out on my boat. PM me if your interested.Al