Hardwire Garmin Etrex vista
Calling on those electrical buffs........
I am about to hardwire the Garmin etrex cigarette lighter adaptor directly to my 12v battery. Before doing so, I was wondering if anyone has taken the cigarette lighter adaptor apart and done anything to make the circuit board a bit more robust and less prone to vibration for off road use - does anyone know how I would go about doing this?
I have heard the spring fuse is a weak link, is it possible to replace this with another fuse type?
I have also been told to rub dielectric grease on all the terminals - does this make a difference?
I also intend to wrap the adaptor in electrical tape to try and make it more water resistant - any other suggestions?
Last, and perhaps most importantly, I assume I only need to solder one + cable from the battery to the adapter. As the adapter has two connection points (standard cigarette lighter fitting), I assume I don't actually need to also connect a -, or am I missing something?