Installing Speakers In A Mercedes Benz..?

Anyone know the procedure of doing so..?

We just got a new stereo put in, and i just bought some JL's for it last night.

Now, the fronts i can just swap with the old ones.

Now for the back i have 6x9 JL's that im putting in the back. Right now the car has no speakers there, so im gonna have to do the wiring.

So for a Mercedes Benz SL500, is there any special things i'd have to do to make these speakers work.??

Doubt it.

already figured out what to do.

just gonna rewire the whole system. take out the factory amp and rewire all the speakers to the new amp.