mata....
great on the GTI..
again, very ugly install but works..
very strong duct-type tape (black Gorilla Tape if you have it there) wraps the 2nd and Primary Battery together - 5 or more wraps..
I also have 2 Battery Buddies charging. Each one charges its own Battery. I tied the 2 Power Cords to a single Plug to make the Mains connection easier.
I have the FF and Nav Lights on the 2nd Battery. GPS and Radio are self-powered, although that might change if i change Radios.
The Lights/FF Connection is through a Block mounted in a 'tupperware' type of Container. Not completely waterproof, but if it floods, i have bigger issues. The Block allows connection of other items. The Block is sprayed with water dispersing spray to control the corrosion. The Container is held by extra-strong double-sided tape to the floor of the Hull..
Nothing has bounced free yet so I am not expecting it to... if I connect a Radio, i might have to upsize the Battery but as it is, the FF goes all day long without an issue.
Lights are never used but they are LED's so they shouldn't make a difference on the Battery usage..
hope this helps..
Steve