I thought that I could just remove the ballast in the old light and connect the +ve and -ve in the van.
This is what I ended up with
but when I connected the red and black wire back to the connector in the van the fuse in the zig control circuit for the lighting blew.
As I was connecting the LEDs to the 12v battery I didn't think I needed this transformer but I guess I might have been wrong?
I am now thinking about putting some LED strip lights in the labcraft casing http://www.ebay.co.uk/itm/3528-5050-563 ... SwKtlWn0XE would I need a controller or transformer or could I connect these directly to the connector in the van?
Any help would be great.
Many thanks