The 2KR uses a H4 lamp with the P45t base. The originals I believe are 35watt. You can see an example on page 6 of the Hella catalogue <!-- m --><a class="postlink" href="http://www.hella.com/produktion/HellaAU/WebSite/MiscContent/Download/Garages/Light/Bulbs.pdf">http://www.hella.com/produktion/HellaAU ... /Bulbs.pdf</a><!-- m -->. The 3LN have a 55/40 watt lamp. PM me if you know what type base the 3LN use?