My mistake then. What you are saying you feed the GPS from the repeater. Power from battery to Repeater and power and data (4 cables) to the Garmin. Right?
When are you making next batch order?. I am not in a hurry.
About connectors, i want to connect several devices and if possible protect them with a fuse. Your dad had a good idea. By the way is this water proof. It is raining a lot in Marocco causing faults in electrical devices.
Is your dad joining the Africa Race 2010???