In my escort cabriolet I have just put a new live amp wire in changed the amp and added a power cap but kept the same earth I've also run another set of Phono leads and for some reason when I start the car all I get is really bad feedback like the engine sound coming through the speakers what have I done wrong

 

EARTHS EARTHS EARTHS then check all yr new leads and move them away from sources of interfereance then check the surpressors on the alternator fella

 

Get rid of the power cap, it does nothing. Make sure the RCA's run down the opposite side of the car to the power cable, make sure the earth is nice and clean.

 

right i have run a power cable round the outside of the car passenger side run an earth round the drivers side to the battery rca's down the middle with the remote wire and on the inside of the car i tried the same i have all the seats out and carpets ive tried earthing it to the car in many places tried differnt leads and different amps and still the same ;-( the annoying thing is it was fine untill i changed the power lead amp and added 1 set of rca's what is a suppressor when its at home

 

exactly what it says it cuts down [ie surpressses the exact noise u r fighting with] it is usually a rectangular black or red plastic box bolted to yr alternator and connected to yr battery charge lead 6mm stud if later car or independent spade connection on 3 pin plug early type

 

So why would I now have this problem and how do I go about solving it need to try and get it sorted tomorrow advice please

 

I hope you meant run it OUTSIDE the car for testing purposes only,as escorts have a huge grommet behind the wheel arch liner which can take any sized power cable with ease into the cabin area ,have you also thought the new leads may be faulty ?

 

Yea lol just to try it to see if there was a problem inside the car I've tried different RCA leads and still the same problem

 

Did you disconnect the RCA leads before you started disconnecting/reconnecting the power cables? If you accidently touched the positve lead against the earth then its quite likely it'll send the current back down the head unit to blow an earth track inside. Have you got another head unit you can try?

 

it will come down to a process of illimation,even try another stereo if you can

 

I've got another stereo I can try but if this was the case would it not be abnormal even with the engine of as I only have this problem with the engine running

 

I had this in my Focus, alternator noise through the speakers, as the revs increased so did the pitch of the sound, it was the earth, i sanded the area around the earth back to bare metal and bolted it down.

 

Thing is I've tried 3 different earths and I've even earthed it back to the battery and still the same

 

Will this be the answer to my problems or is this the wrong item. http://www.nexxia.co.uk/product.asp?...on=Car%20Audio

 

Or do I need this one. This problem is really getting me down now
http://www.nexxia.co.uk/product.asp?...on=Car%20Audio

 

Have you tried a different headunit yet?