Cool, Thanks Dave

try having a look at these on evil bay the wife has them on her californian 171827814416

Thanks Chris, do you know are the Dimensions for the base, as my lens is 34x13cm

Dimensions:

Unit: 31cm / 10.5cm / 7cm

Lense: 29cm / 9.5cm

Distance between fitting bolts: 14.5

Water proof, plastic made

Hudge Buggy, thanks for that, need to wake up here.
They be to small.

Californians came fitted with Hella truck/trailer units fitted that I belive are now obsolete. A long established commercial factor may be able to help you though. A way round it is to fit a pair of VW Type 2 rear lights that are very nearly the same size.

http://www.ebay.co.uk/itm/like/391260200797?adgroupid=13585920426&hlpht=true&hlpv=2&rlsatarget=kwd-75951449346&adtype=pla&ff3=1&lpid=122&poi=&ul_noapp=true&limghlpsr=true&ff19=0&device=c&chn=ps&campaignid=207297426&crdt=0&ff12=67&ff11=ICEP3.0.0-L&ff14=122&viphx=1&ops=true&ff13=80

quite a performance with the pics, but got there in the and and put your post count up quite a bit   

closest i could find on a quick search hope it helps,, i'd try looking for old van, pickup etc 

Are there any part numbers on them?

loads of numbers on them, not sure which would be the actual part number, thats on the lens
Nothing on the base other than Hella

Hella have a base in Dublin, they may be able to help.

Have a look here
http://autoelectricalpartsuk.co.uk/products/Lighting/Rear_Combination_Lamps_Bulbed_15&orderby=price
Look at the commercial rear lamps in the list

I have some big LED rear clusters that may be suitable that we ordered in for a customer that never came back for them

32 x 14 x 3cm

I`ll see if I can get some pictures up later

Have a look here
http://autoelectricalpartsuk.co.uk/products/Lighting/Rear_Combination_Lamps_Bulbed_15&orderby=price
Look at the commercial rear lamps in the list

Well done Shaggy, they look like Durite copies of the original Hellas.

http://autoelectricalpartsuk.co.uk/products/Lighting/Rear_Combination_Lamps_Bulbed/Commercial_Rear_Lamp_RH_L_345mm_Durite_008500.html

http://autoelectricalpartsuk.co.uk/products/Lighting/Rear_Combination_Lamps_Bulbed/Commercial_Rear_Lamp_LH_L345mm_Durite_008600.html