I have spoken to Tim and he should be along to help you shortly...
Basically, Traxide kits are designed to fit exactly into a D3 / D4 / RRS depending on what flavour you order...
They come with everything you need to D-I-Y and its EASY.....
They're also designed to work with modern charging systems (where alternators turn voltage up and down to their control) and give additional benefits of improved Aux capacity etc...
Drivesafe (Tim) will add more I'm sure...

