Double Din Question - Chrysler 300C Forum: 300C & SRT8 Forums
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post #1 of 13 (permalink) Old 04-27-2012, 12:47 AM Thread Starter
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Double Din Question

i have a question. .i purchased a kenwood ddx616 double din radio. .i was told by the pros that i need a t-harness for my radio so that my factory amp will still work with the aftermaket double din. .my question is if i choose to go to best buy to purchase a scosche direct wire harness for my vehicle can't I just run a remote turn on lead to the factory amp so that it powers up without buying that $200+ wiring harness??

eventually i am going to replace my factory amp with an aftermarket amp any how but just for the time being im sure theres a way to bypass the harness.

also to the radio is equipted with navigation & bluetooth so is there anyway possible to use my factory navigation or bluetooth mic with the aftermarket radio??? I definetely wanted to be able to use the u connect mic because its hidden versace an aftermarket one.
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post #2 of 13 (permalink) Old 04-27-2012, 09:50 AM
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Congrats on the new head unit.

It's not a power issue with aftermarket head units, it's the digital signal input that needs addressing, hence the need for the harness adapter.

The PacAudio C2R-CHY4 is what I'd recommend. It's for replacement radios with navigation inputs. Retails around $130 on their site, available online for a lot less than that, like on Amazon at $67.49

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post #3 of 13 (permalink) Old 04-27-2012, 11:38 AM
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There is a new version that includes the SWI interface. PAC RP4-CH11. I just bought if from Amazon for $100 odd

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post #4 of 13 (permalink) Old 04-27-2012, 12:08 PM
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Maddog, is the C2R-CHY4 purely to retain the factory chimes etc, or does it also adapt the Chrysler wiring to an ISO plug to use with an after market head unit?



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post #5 of 13 (permalink) Old 04-27-2012, 12:34 PM
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Factory chimes are not served by the head unit. The PacAudio interface insures that the CanBus transmits and that the amp receives the signal from the aftermarket head unit since the aftermarket head unit does not have a CAN node.

Controller Area Network (CAN)

CAN is a serial bus system developed by Robert Bosch GmbH for automobiles. All CAN nodes are able to transmit data and several CAN nodes can request the bus simultaneously. CAN is message based not address based. Another words, the CAN node sending the message does not address the node it wants to talk to. It simply puts the message on the data bus for all other nodes to receive. It is up to the node(s) to receive the message and process the message if it was intended for it by an identifier in the message. This would simplify communication by only having to send the message once and if needed, can be received and process by several other nodes.

Advantages of CAN are:
  • High speed communication with error detection, which is used for engine management.
  • Low cost. Two wire or Single wire CAN uses less wiring between nodes.
  • CAN is also used for industrial field bus systems and medical.
  • Is an international standard: ISO 11898
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post #6 of 13 (permalink) Old 04-28-2012, 08:34 AM
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They don't come with ISO plugs. Bare wires that you have to connect. I have bought a standard plug for a fiver to use as a donor.

Also I have read that if you don't use a can bus plug then your new head unit doesn't know that you have switched off, so Bluetooth May stay switched on draining the batt. Functions like radio staying on for x minutes after you switch off etc. may not work

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post #7 of 13 (permalink) Old 04-28-2012, 05:57 PM
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^^^^ Absolutely Correct! ^^^^
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post #8 of 13 (permalink) Old 05-01-2012, 03:11 PM
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Sorry for appearing thick, but this really is not my bag! Do I take it then that in order to maintain error chimes and other functions such as delayed power off (indeed power off at all!) I need the C2R-CHY4. I also need an ISO adapter to convert the Chrysler harness to the replacement head unit.

Also I have read in places about amplified systems not being wired up logically (i.e. front left output to front left speaker), but front speaker outputs going to rear speakers (or something similarly strange). Could you please explain this in idiot proof terms for me please. (I have the Boston Premium Audio badges on the front doors but I don't know if that means it is an amplified system or not).

Cheers.
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post #9 of 13 (permalink) Old 05-01-2012, 03:30 PM
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you should just need the c2r-chy4...it will do everything you need minus steering wheel controls. it'll connect to the oem connection and the other end will be loose wires that you match up to the corresponding wires on your head unit harness. it's pretty much just matching the colours...



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post #10 of 13 (permalink) Old 05-02-2012, 09:04 PM
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Quote:
Originally Posted by spikusmax View Post
There is a new version that includes the SWI interface. PAC RP4-CH11. I just bought if from Amazon for $100 odd

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How it is working? It sounds like this is what I need instead of the other PAC adapter from what Ive read on their website.
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