I got a set of 03 lights with the stock bulbs and harnesses. Will I be able to unplug the current '99 lights and plug in the 03 harness with no problems? I hope so because I bough them specifically because they had the harness.

Will the blinker bulbs alternate and all that fun stuff when installed on the 99?

 

im a lil confused, you have the 03+ tails and harness's and you wanna put them on your 99 correct? if so then yes, you unplug the 99 harness and plug the new one in and the rest will fix itself, theres 3 bulbs per light on the 99-02s though and 4 bulbs on the 03+

 

You are correct. The 4th bulb is the little blinker blub off the the side right? Thats the one that will flash alternatly with the big red on in the rear if I understand it.

 

Yessir...I have the 03 tails and bought the 03 harnesses and they plugged right in and all of the lights function as designed

 

Sweet, I got both lights with harnesses for $85 together, each from different sellers. I will be installing them next weekend.