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Ok I tried searching and trying different things, and looking at all the other diagrams posted before.. but still no luck

I just got a JVC KD-LH300, everything powers on beatifully but when I switch it to the radio no sound from the radio at all. CD works fine everything lights up but the radio does not have any sound.. any ideas im stuck

 
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Did you plug in the antenna wire?

 
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recheck all connections and the antenna is a good idea too!

 
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antenna wire would be my guess if everything else is working

 
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do you just hear static? if so, yeah check the antenna wire. and if not that, check to see if the power antenna wire is connected to the car harness (blue)(i know we dont have power antenna's, but we have a antenna booster and needs to be powered)

 
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where do you check the antenna booster? with my new deck it comes with that blue wire with a white stripe on it that has a peice of plastic on the end of which says it should connect to attenta power, does that plug in anywhere? sorry if i sound like a n00b

 
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dude that should be a black plug it looks like microphone plug but litbit fat and it plugs behind the deck

i think the wire u talking about is for auto antenna....and we dont have that...

 
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I plugged that into the black part where it goes into the new deck, and still no sound, now I dont have a blue wire that goes anywhere on the harness and that says attenta on it but I tried two other harnesses and they dont have blue so I figured i dont need the blue one so im stuck, all connections are secure maybe the deck doesnt work with the radio but as long as I plug in the old radio boom it works

 
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the booster is in the back of the car behind the plastic next to the window, and it needs to get power. we don't have power antenna in our cars, but we still need to connect it to power that booster. in your harness that plugs into your car, there should be a blue wire saying power antenna (mine did), and you need to connect that to the power antenna wire from your Headunit.

forgot to ask, but your car is a 7thgen, right?

 
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yeah i have a 2002 si(canadian)

So just so I know whats going on I need to connect the blue/white wire that has a plastic on the end of it to the the booster?

where exactly is this booster located in the back ?

 
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no, u dont need to run the wire to the back of the car, the wire is already going from the booster to the factory car harness (behind the HU), so if you don't have a blue power antenna wire in the aftermarket adapter harness you bought, u need to tap the wire from your HU marking power antenna to the factory harness. First of all, just to clear things up....did you buy the adapter harness that plugs into your car harness and gives you all the colour wires to match to the Headunit harness? (sorry if confusing), if you did, are you sure there is no blue wire making power antenna?

 
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yeah the harness I bought fits perfectly into the the car harness.

There is a blue wire that is on the aftermarket harness that plugs into the car harness says "attena or power attena" i forget but, that doesnt go to anything on the harness that plugs into the aftermarket deck.

 
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there is 3 harnesses, the harness that is pluged in the headunit, the harness that is connected to the headunit harness and plugs into the car harness, and the car harness. the power antenna wire from the headunit harness has to be connected to the wire that goes to the booster. now, u can either connect it to the blue wire (if you have one) in the harness that is between the car harness and the headunit harness. if you dont have that blue wire, you'll need to connect it to the car harness by tapping into the wire (not sure what colour it will be in your car, but i can find out in few minutes)

 
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This is a crappy diagram I did at work but it shows overall picture

 
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you can connect that to the blue with a white stripe on the aftermarket radio

 
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ya, that blue wire that is not connected to anything, connect that to the power antenna wire from the deck

 
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so just clip out that plastic peice on the end of that blue/white wire and connect it to the blue wire?

 
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yup, thats it!

 
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this might be off topic whats the point of that plastic peice ?

 
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there is the actual antenna that needs to be connected and also the power antenna wire.

 
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The attena plugs into that black socket peice where it fits into the deck

 
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yup

and what plastic u talkin about? the one i mentioned that the booster was under? if so, it's there to cover the metal, it's the plastic that goes from the bottom of the window to the top of the window (i dont know what you call that)

 
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its a plastic cover that is on top of the the blue/white wire that is circular has a medal shield inside the plastic peice. i can take a picture of it when I get home

 
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oh taught you meant the cover i was talking about. that cover is there in case you dont use it its not bare wire and you could put a connecter to your other wire so it could be pluged in that one. but i always cut it off

 
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yeah i'll see then what happens when I get home, I spent all day yesterday working on it so i'll giver' another shot tonight when I get home ill post pics when im done