Question about Lanzar HTG244 Car Audio Amplifier

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My radio stopped working after hooking up the amplifier

I have a crown victoria 1999 p71 and i just put in a new radio and an amp and subwoofers. before i hooked up the amp the new radio was working. after i hooked it up my radio wont turn all the way on, the light will come on but its very low and no display on the screen. when a put the factory radio back in it wont come on at all. all the fuses seem to be fine. whats wrong!

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Did you double check your work? Did you check the resistance of the fuses? Just because the fuse appears to be good, it can still be blown. Do you have access to a multimeter? You need to check and see if the head unit is receiving 12 Volts continuous which you put the multimeter probes to the black wire and the yellow wire. Then connect the probes to the black wire and the red wire. This wire should only have power when the car is cut on. If you are not getting 12 volts to these points, the problem is your wiring system somewhere...probably a fuse. If you are getting 12 volts, your head unit is garbage. I want to say it is the fuse. 

Posted on Oct 02, 2009

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Posted on Jan 02, 2017

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