Speedo, there are two major problems right now - Lowrance and Northstar/Navman. Lowrance is the worst. There are literally dozens of Lowrance products that are backordered. As you say, an extension cable is something normally stocked. But when the cables are ordered and the manufacturer doesn't ship them, there's not a lot we can do. I also checked with three national wholesalers and no one has any. If find one somewhere, just tell us and we'll cancel the order. An unshipped order does us no good whatsoever. The latest promise from Lowrance is the end of this month.
As an FYI for everyone else, Navico, part of the Simrad group, bought Lowrance/Eagle in 2006 and bought Northstar and Navman in March of this year. So we've got Garmin down in the Cayman Islands, Simrad et al in Sweden, Raymarine in the UK and Furuno in Japan.