To get the Team Rocket outfit, you need to go to the Underground Tunnel. Down one of the hallways, you can take pictures. But because Team Rocket has invaded they have run off. There will be a Rocket Grunt asking if you want to join team rocket, you reply "Yes." you will then put on the uniform and be able to save the RadioTower!
radio tower
go into the underground. you will dress up as a team rocket member. then just walk in to the tower.
you have to beat team rocket in goldenrod city
The Goldenrod City tunnel in Pokemon HeartGold is in the place where you got your Team Rocket uniform from.go in all of the houses in goldenrod and then you will find it (it looks like a very small house
go into the tunnels in goldenrod and you will find a team rocket grunt go over and talk to him and he will give it to you
Team Rocket will be at the Goldenrod Radio Station after you have defeated Pryce in Magohany Town.
Goldenrod.
I don't think you actually need to find them in Goldenrod, but actually in Mahogany.
Fork up their sheet
You go to underground goldenrod photo place and there they'll offer you a rocket unifrom accept it then go talk to them
the underground tunnel in goldenrod
Battle Team Rocket in Goldenrod.
radio tower
go to underground goldenrod
go into the underground. you will dress up as a team rocket member. then just walk in to the tower.
if your talking about the team rocket uniform that's under ground in goldenrod (the place where you get accesories for your Pokemon)
After you beat them in mahogany town.