Anyone know the reason why my stock AM/FM Cassette stereo's volume goes up and down by itself? Do the 1990's have a separate Amp ?
Yes. A 90 should have an Amp behind the Stock Radio Unit. It should be connected to the tunnel bracket. My radio is not stock so I cant give you a pic.
1990 GT- 308, Twisted Wedge, TFS cam, Holley Systemax, V-1 S Trim 12 psi, Power Pipe, Meth Injection, 5 speed, 3.73s
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