It's worth while if you want to get your batteries to last longer between charging I changed all of mine but with out seeing your lights can't suggest replacements but there are sellers on ebay who post to spain

Hello

Yes definitely worth while. If your lights are of the small halogen 2 pin type (G4) then you can replace them with these. http://www.atenlighting.co.uk/caravan-motorhome-lighting/g4-leds

As you will see from the link there are two types horizontal and vertical yoou need to check which are which in your van. Usually the small lights have vertical pins and the larger ones horizontal You can also get different light tones. We choose warm white, which is nice and cosy

You don't need to change the light fitting just the bulb.

I would imagine Aten Lighting would post to Spain if you asked

Spinner

Hi I have fitted LEDs and although they do save a mass of power they are not bright enough if reading for long periods.

In the uk I got some from ikea good price and are oval shaped so fitted good behind the glass covers. I changed them all after seeing a hole in the head rest of a motorhome with drop down bed where they left the over head bed. The halogen bulbs get very hot where led is cool with lower drain.