I dont know about automotive ones but when I installed some tubes in my computer it was just plug the converter into a 12v power source and tape/bolt/secure the physical CC tube wherever you need it to go.
As for red looking like pink, I know to some extent most of them do, but I'd bet the cheaper the tube the closer to pink it looks.
Also, have you considered just using LED's? I'd be willing to bed their power draw is less than CC (just a guess though).