Would it work if I spliced a positve and negitive from the external speaker port on my police scanner and tapped them into the door speaker wires on my factory radio harness? I understand that when the radio is on, the audio from the scanner and radio will be on at the sametime and will mix together.
That would probably be a bad idea. I am not familiar with that particular factory amplified system, but I do not know of any factory amplified system that would even think about liking that.
Also, the output from that scanner will not be enough to drive those speakers. And, it will probably fry your scanner.
If your factory system has an input, try mating a cable from the scanner output to the radio input and let the radio do the amplification.
This is not an all inclisive answer and is not meant to address every possible way this will not work, it is a basic starting point with a "must have" to try and see how it goes.
Even if you have an input to your factory system, you may need to limit the ouput of the scanner to 50% etc to prevent distartion.
Sorry, but that's the best generic answer I can muster with nothing more to work with.
Thanks so much for your input!! What other information would you need to try to help me further?? My factory radio does have an aux input; in fact I currently have the scanner plugging into that. I used a double male wire and plug from the external speaker connection into the aux port on my factory head unit. This works great, the only issue is I have to have the head unit set to aux to hear the scanner; therefore no music at the same time. Ultimately I want to be able to listen to the radio/cd/xm at the same time be able to hear the scanner in the background. If something comes on that I want to listen to then be able to turn down the music and be able to hear the chatter on the scanner. Any help/advice you have to give for me to get this done would be tremendous!
Second that, Notepad is the universal UN-formatter. If it's only a link or small line, few words, you can even use the address line at the top, or Start > Run and paste in, then copy back out.
Well, as they say, you can't have your cake and eat it too. With the factory unit you get radio or aux, not a mix.
Perhaps just getting a small boombox of sorts and running the scanner through that would suffice. Then if there's a 211 in progress and donuts go flying through the air, you can just mute the radio and hear the sirens wail in the scanner chatter.
Radio Shack sells # 21-549 external speaker for scanners and cb radios.
https://www.radioshack.com/product/index.jsp?productid=2036240
Plugs right into the speaker jack on your scanner. I had one in my car for several years and it worked out great. Just plug it into the scanner and lay the speaker on a front seat. You'll hear it fine.