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I bought some 6V yellow bulbs from Der Franzose in Germany. They might also have yellow 12V bulbs.
When we did a club run to Loheac one of the members fitted yellow lights when it got dark and was raining he had to ring the lead car ( a 750cc renault4CV) to ask him to slow down as he could not see the road to keep up, they look great but do they do the job?
These are illegal 100/80's but I found a set of 55/60's which are great!
Any classic car or non classic car made before 1993 can have white or yellow lights. Any car build after 1993 has to have white lights. European lawYes, there are the yellow 12V bulbs available in Der Franzose. You can have H4 55/60W type for 6,39 € or classic bulbs 40/45W for 3,29 € each. However they are not allowed for the normal road traffic here in Czech and in Germany not either, as far as I know. So check at first, if the using is legal in your country.
http://www.franzose.de/en/Renault/R4/Leuchtmittel-Gluehbirnen-12-Volt/Page-2/
Any classic car or non classic car made before 1993 can have white or yellow lights. Any car build after 1993 has to have white lights. European law
Thankfully incorrect. Yellow bulbs are completely legal in the UK/EU regardless of age of vehicle, Either white or yellow are OK but other colours are not.
They were phased out in France, which was the last country in Europe to use them in any number in the mid '90s more due to fashion and people considered them old fashioned and that newer cars with more modern lighting systems used standard white bulbs rather than anything else.
European law