Remove your radio of course, this method works with an aftermarket radio, but will also work if you use the factory radio, and cut the speaker leads and wire a line output converter to the radio side for the RCA output to the amplifier When you pull out the ug in the adapter harness before making the modification below, get any one of the speaker leads.say the Gray (+) Gray/black (-) Right front lead, and touch the wires + and - to a 9 volt battery.if the speaker makes a pop sound, you do not have a factory amplified system, and this method will work for you If you are not sure if you have the factory amplifier, here are some tips:ĭo you have the factory sub.well then you have the factory amplifier. This method will not work with the factory amplified systems, you will have to wire to the front speakers themselves (or to the amplifier location, which is under the steering wheel, I think it would be just as easy to wire to the speakers themselves) This will of course, also work with the factory speakers as well, but a high powered amp will likely destroy the cheap factory speakers, so a speaker replacement is recommended After all, look at the tinsel leads on the speaker, they are usually 18ga or smaller, if they can handle the power, so can the factory wiring. Use your own judgement, but I can tell you from experence, that it is not a problem. I worked as a car audio installer for over 14 years, and have done this method more times than I can count, with amplifiers up to 500 watts/channel with no problems, although I'm sure I will get the usual "but the wire is not heavy enough for the amplifier power" arguement. I see this repeated frequently on the forum, so I decided to write up an how-to on the easiest way to wire the 4 factory location speakers (Mids/Highs) in your cobalt to a 4 channel amplifier
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