The recommended size of panel is 50-300W.
Cars manufactured 2015 and later have smart alternator. Vehicles prior to 2015 please refer to vehicle manufacturer.
Close to the secondary battery and as cool as possible.
No, you only require the service battery to be lead acid.
The D250SA has a wiring harness with a black and a red wire, the red wire must be connected to an Ignition signal wire +15 (DIN 72552).
Please refer to the ''Cable and fuse recommendations'' in the manual.
Any application involving a secondary battery or solar panel- please refer to manual or web page for fitting instructions.
The D250SA has a wiring harness with a black and a red wire, the black wire must be earthed / grounded to change the charging voltage for AGM.