Question about 1986 BMW 3 Series
How to set up radio without wiring diagram : First you need to hook up the lead and ground power wire to your radio.(the lead usually has a line all the way down it). Turn power on to the radio and switch to am/fm. Locate any lead speaker wire and connect it to front right -. Then take all ground speaker wires one by one and touch them to front right +. As soon as you hear a sound, find out which speaker it is coming from, as soon as you have identified correct speaker remove wires from right speaker and mark them carefully. Do this with the rest of speaker lead wires an speaker ground wires and you will be able to connect your stereo.
Posted on Jun 16, 2009
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Posted on Jan 02, 2017
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