5mm superflux led's and pwm

Ok im new to this site and im gonna start a project on make a series of led's work off 12v and the most i wanna use is 10 of them and right now i seem to be stuck on the subject of the pwm and what all would i need to make one and the reason i wanna do this for a tail light project i was reading another thread bout this..and the reason why is for the parking light/brake and what resistors would i be looking for? for the led's them selfs? thanks

You do not need to PWM for a tail light
First u need to find the forward voltage drops of the LED's that you have.
For this u need a 5V supply or a li-on battery and a multimeter

just search the forum for "tail brake light led" you will find plenty of circuits and ideas to build your own.

More to the point, brake lights are critical safety components. The reccomendation is to use a guaranteed LED lamp replacement, or not to do it at all. Functioning brake/turn signals are too important to try as a hobby attempt.