Here's a ready made product:-

(Sorry Dutch website)

http://auto-onderdelen.marktplaats.nl/oldtimer-onderdelen/391981125-mercedes-w123-3e-remlicht.html?return=eJwljMsKgzAQRf9F0KXmQbtIkGL%2FJGhKQl6DE7G09N87wc3ccw%2BXMYqrr1dMo%2BI3qTq0Zl%2B ddrWCmqZQwOYxmT1UiMZUHHOcrskIDh7vOPNhw7mWXi68l89IZxF3xog3T9xcpfx4IMTXhpeEJtsqkV%2FykezuV6rhpHpyIYkLt g9iADhm1unfH13uNIQ%3D&df=1&fta=eNotkF1uwyAQhO%2FCQ575NbAoV%2BgVosVAatVprOAkVqPcvXjJ2ydmd5gdBAuvCg7Y%2FTafHjhXFipYBWybj%2BKQ6nG9 ggizADlwHtIEYV7hb1pCLalCWFbg4bLA7%2F2Sb9MYfp7wFFKFa51AHpblfuS7oQa24DmzMDWzCs1%2BSvST4k3yKmvPh00YZ1Vx ZhNDUl7E1CCXbK3bhDUlO5t3yC7l0kEYTzDoNBIYJRSBVlz0mVEZAhtjX1da6x1SkQN2ybqhgzZDl7iNBNFzSYBx7FuIORGYMdLw 2MJaetF8JMOxBaOESWZBPrF4%2FwElRJecNn2YS7oiGlQkRYE9WCxc0V1YEDkN2%2BzdXpxoHa7XBVM9zfn3vH7v3eomeGAX3E57 3a3hBNK3RwkMnyx8ffDBAgKH1%2Fv9D0FPlgI%3D&fta_ind=28&fs=1

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!