So to start things off, i've been doing a beautiful red LED conversion to my 1996 volvo 850 sedan (base), I finished late last night on doing the foot wells so when i open up the car it lights up the floor in front and in the back.

So today since I'am installing these LED strips in my car I thought i would install some behind my instrument cluster so i can see my guages, my dash lights don't work and I cannot find the short so this was going to be a temporary fix till I could solve that problem. So I have a ton of extra wire, and I was just going to effortlessly wire it from a rear interior light, then pull all the other bulbs out from the other interior lights (I never use my interior lights btw) that way with a flip of the switch on top I could turn on some LED's.....

Then beforeIi did any cutting, I was testing to see if my LED strip would get power from the light wires, I tested it with the red/wht wire still connected, the blue, and the blue/blk wires, flipped the interior lights on and then nothing....I checked fuse #15 because I blew it 2 times while installing the footwell LED's, but i replaced it and nothing...

Anyway, if I could get some help on this one, it would be amazing, and I will upload photo's of it after with the tools and supplies

 

It sounds like you want to know which wires on the LED strip to connect power to. If you posted a picture of that LED strip, I don't see it.

 

Some wires for the 12v is reversed. LED only wants power in one direction. Get your multimeter and figure out what is what.