new radio no sound - Chrysler 300C Forum: 300C & SRT8 Forums
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post #1 of 17 (permalink) Old 08-02-2011, 02:22 PM Thread Starter
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new radio no sound

hi all,

I a have a 300C touring from 2007 and a very old radio in it with the boston sounsystem.
So I thought, let's buy a new one wit all features you can imagine.

I installed the new system and it seems to function well exept there is no sound at all.
I think I did all the wiring well. I will post the diagrams of the old and new unit here. I think I have allready the canbus system because of the old diagram. Also I can't program my steering wheel.

I have put the speakerwires to the speakerwires from the old diagram. The bats goes to the batt, gnd to gnd, brake to gnd, acc to radio on, keypad studio to can+\-. The rest I don't use.
If I connect a external speaker all works well.

Can anyone tell me in simple language how to solve these 2 problems?

Thanks

Micronikje
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post #2 of 17 (permalink) Old 08-02-2011, 06:17 PM
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What harness adapters are you using?

Mods (2005 C): Stereo only, PAC SNI, Peripheral CHYX, XM Commander, AudioControl four.1, MTX TA5604, MTX TA5601, Polk MMC6500, Polk MMC690, JL CS212R-W0 (2013 C): None..........yet
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post #3 of 17 (permalink) Old 08-03-2011, 02:59 AM Thread Starter
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Quote:
Originally Posted by Cool_V_300C View Post
What harness adapters are you using?
none. I directly put the wires from the new system to the old wires, because I couldn't find the right adapter.
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post #4 of 17 (permalink) Old 08-03-2011, 09:37 AM
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If the radio wasn't mean as an OEM replacement there would need to be an adapter.
I think part of the problem is the CAN-BUS interface related item. It would become
quite apparent that this is where you are having difficulty.

If your car has an amp, it is likely the new radio isn't able to signal for the amp to
be turned on, hence lack of sound. But it probably doesn't stop there. As you
indicate, you can't get steering wheel controls to work. I don't know of any
method to do this without an adapter, unless, as I said, the radio is configured
as an OEM replacement.

Then finally there will be volume, fader, and tone control issues. Without CAN-BUS,
these likely will not work as well.

First step: Find out if you have an amp in the car. This would be based on the options group the car came with.
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post #5 of 17 (permalink) Old 08-03-2011, 10:13 AM Thread Starter
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Thanks for the info.

I don't have a amp (it should be placed then in the trunk of my car and there isn't one) and I think, that I have a can bus, because of the 2 wires in the old diagram (can+/-). My old factory radio could be managed by the sw, I suppose through the can bus and the new one has a setup for it (the keypad wires in the diagram).
I could replace all the speakerwires and one of the two problems would be solved, but that is the last thing I want to do. Today I also checked the wires from the right front speaker. They were green/yellow and green/grey. I couldn't find them in the connection adapter for my old radio. So I am stuck for now. Is there any way to see for sure if I have a can bus? Where should it be placed?

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post #6 of 17 (permalink) Old 08-03-2011, 01:02 PM
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I think you should do a search on our message board.

The amp would not be in the trunk. If there is an amp it is located up front on the shelf behind the knee bolster on the driver's side (left hand cars).

If you search for "Access stock amp" you will find instructions to see it.

As for CAN-BUS: All 300C are built with the CAN-BUS system. Therefore any radio added to it must be CAN-BUS compatible or require and adapter to make it compatible.
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post #7 of 17 (permalink) Old 08-03-2011, 02:53 PM Thread Starter
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Quote:
Originally Posted by Cool_V_300C View Post
I think you should do a search on our message board.

The amp would not be in the trunk. If there is an amp it is located up front on the shelf behind the knee bolster on the driver's side (left hand cars).

If you search for "Access stock amp" you will find instructions to see it.

As for CAN-BUS: All 300C are built with the CAN-BUS system. Therefore any radio added to it must be CAN-BUS compatible or require and adapter to make it compatible.
Your advice is really great. It helps me a lot to understand all this. Thanks.

Now comes the question what to do next? I found the amp and I don't want to bypass it. But maybe it could function like this: on the new car diagram you see a wire for a external amp. On the diagram of the old radio you see 2 power cables and a radio on (acc). I only use at the moment 1 power cable and the acc cable. If I would connect the ext amp cable to the second power cable, could that activate the amp? Or would it even be better to connect the ext amp cable to the acc cable?
Am I right in understanding that if I could do the above trick and power on the amp I then would have sound?

Thanks
Micronikje
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post #8 of 17 (permalink) Old 08-03-2011, 04:39 PM Thread Starter
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Forget what I wrote about powering on the amp. It is stupid.

But could I power on the amp with the external amp cable from the new radio and where do I have to connect it to? Or is there a other simple way to do it?

Micronikje
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post #9 of 17 (permalink) Old 08-03-2011, 05:08 PM
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I am not certain, but I do not believe there is an acc connection. CAN-BUS does this function. So instead of connecting ACC to Radio-On, you should probably connect the
radio antenna from the new radio to this. Then you need to find a switched accessory lead (such as rear fuse 35 or fuse 18 in the ignition on position) to connect to ACC.

I'm also concerned about the Keypad wires being connected to CAN+ and CAN- on the radio.
Are you absolutely sure the Keypad studio are CAN-BUS connections?

It's probably best if you can locate a PAC C2R-CHY4 as this would make the proper connections for what you are trying to do.
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post #10 of 17 (permalink) Old 08-05-2011, 06:17 AM Thread Starter
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Hi,
I have sorted out some things regarding the factory amp.
There are two plugs. A small one and a bigger one.
The lay-out is as follows:

Small one pins
1. Grey
2. Green/blue
3. Green/brown
4. Green/brown
5. Grey/brown
6. Spare

7. grey/yellow
8. Green/yellow
9. Green/grey
10. Spare
11. Spare
12. Yellow/grey
13. Green/brown
14. Spare

Bigger plug

1. Grey/orange
2. Grey/green
3. Grey/brown
4. Green/grey
5. Spare
6. White/orange
7. Green/blue
8. Grey/blue
9. Black/brown

10. Grey/yellow
11. Grey/green(light)
12. Grey/orange
13. Green/grey
14. Spare
15. Spare
16. Spare
17. White
18. Green/orange
19. Grey/orange
20. Black/brown

Now my question is:
Which is the permanent 12v wire, which is the groundwire and which is the turn on (remote wire)

Micronikje
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