After i put in a new cd deck only the speakers under the dash work and i get a ticking sound from the right side of the dash.When this ticking sound goes on my belt light flashes"probably because my belts dont work. Also my 91 rx-7 runs rich, so once and awile it gets real fast or really slow.The last of my problems is that it does the auto warm up when it is ot out side and when cold dosent at all

 

The sound system in a the rx7's including the cheapest sound system you could get has seperate amps for every speaker except the driver side what you need to do is go through trace the wires that go directly to the amps from the cd deck and cut them and wire them to the speakers this is kinda tricky for the one on the passenger side depending on how yours is built because it has a box you have to take apart and such i just ran new wires to the front speakers in my rx7

 

I gonna go with the ticking being your cell phone too close to the speaker