2005 V70 light weirdness car has ESP

[chrism]

I've been working on a project to convert the instrument lighting in my old 1800ES to LEDs and I've learned is that you can open Pandora's box when converting from incandescent to LED. One thing I found, at least in my case, is that I couldn't just run the + wire to the bulbs and ground them through the chassis like the original bulbs. I had to severe the bulb grounding and run a dedicated ground wire from the bulbs back to the switch. Another thing about the LEDs is that they are polarity sensitive. So if they don't illuminate they may just need to be rotated pos for neg in the socket.

Bottom line - I would really think twice about converting incandescent to LED, especially on the exterior lighting where you have the bulb failure warning system involved. What does it do when it now sees a drastically reduced current flow due to the LEDs lower demand???