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played with the gain after reading the instructions to work out which dial it was ... turned it down a 1/4 and she's now all good. can now crank up the tunes and here them clearly over the webers

thanks guys

This is a bit of a long shot, but you might want to try replacing the spark leads. I seriously doubt anyone has them any moe, but if they are the old, old carbon type, then they'll cause noise with new head units. Also, if the condenser on the dizzy if faulty, it can cause hassles and finally, believe it or not, if the car is simply out of tune, it can cause it. But like I said, they are in the "Unlikely" section. But what can it hurt to check ??? That way you might be able to turn the gain back up

Yes there is alot of things to check like leads & earth straps to check. l have allways found one or more items isn't upto standard stoping static going to my cd player or CB radio (am or uhf). Thanks for the comments in this forum. Keep Cruzin folks. Bruns