Just a quick question guys, i did a search but couldn't come up with a definate answer.

I have a 99 sierra NBS with a crappy set of euros that just have to go. I'm ordering a set of new style lights from the 04 - 06 sierra from LMC truck and noticed they offer new harness's to go with the lights.

do i need these ? if so will they just plug into my existing junction box ? or will i have to replace it as well.

Would definately appreciate any advice on this subject

thanks in advance

Dan.