Damn you tf :P

The signal now _is_ significantly fuzzier. I just checked the Empeg-box I gave to be installed then _and_ found TWO cables in the box, unused.

I believe another of them was an antenna-booster or suchadingaloo. I'm trying to describe it now 8-) RCA plugs female & male, wires from them to a red 1-2cm long plastic thingaloo. From one side a thick very short cable's head and from the other side a very short thinner cable's head. Ok, this is the antenna-booster?
Is this hard to install by a total newbie that has absolute _no_ knowledge of car audio? Do I need a special adapter some sort of? Living in Europe.

Other cable found unused was a grounding cable I presume. RCA male&female and wires coming between them, end of the wire is a round metal golden thingie.

One problem I've had has been that in the wintertime (-30-0C) my rearspeakers have had a grounding problem. Dunno if the installation was a failure.

Ok, I'm not the best person to describe things in english nor to talk about cars =)