
So I bought a couple of sets of green LEDs to match what I was doing in the dashboard. (The dash now has a wedge shaped bulb so I couldn't just buy the same bulbs) They were a lighter green color and brighter than other bulbs I've installed in my dash. I ended up not using them because the other set suited my style better. They work great in my 66 white air (HVAC controls and the obligatory triple Sunpro sensor). I see some reviews of LEDs not working in older cars. Just apply 12V to the bottom terminal and ground the base and you're done. I'm pretty sure most cars work like this.

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