Electrical problem?? Pls help

Ok now my reverse tail-lights havent been working for ages and it has nothing to do with a fuse or the bulbs beeing burn out cause they are both fine. But now recently a few of my lights on the stock cd deck went out. Then about a week later my right turn signal on the interior is going mock speed while my rear right tail-light doesnt work at all. Any ideas on what could be the problem here?

have u tried trying a new battery? check your terminals and connectiong to the battery and make sure there secure

give this a try....if your reverse light's don't work and everthig is fine with wires ,fuses and bulbs...it's likely the pick up sensor on your tranny..."IT dosen't know it's in reverse"....Now your Signal light's sound like a burnt out bulb...Check to see if your front light flashes Fast To...if so and the bulb is not burnt out...take out the bulb and get a 12volt test light and ground the one end and touch the other to The flasher teminal....I don't know witch one it is but touch them both...it won't hert anything.....If it flashes then it's your connection's on the bulb and terminal...replace the Bulb even if it dosent look broke.....if it dosen't flash then u likely got a broken wire some where...Make sure u got a good ground on your test light.....Your deck problem's are just likely burnt out bulb's in the face there's not a hell of alot u can do about that....Just buy a Pioneer cd deck and instilation kit...U won't regret it...
Hope i helped ya