Rennlist

Extra Wiring Harness?

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Original source

4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHExtra Wiring Harness?

Leading reported evidence

Disconnect from the cd changer

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
- put MOST bridge on the cable inside the dash while the other end was disconnected from the CD changer
Original post Read captured discussion
Extra Wiring Harness?

Frequently discussed work

Disconnect battery several times and switching

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
- disconnecting the battery several times and switching from CAN to AMP
Original post Read captured discussion
Extra Wiring Harness?

Read full discussion summary

Leading evidence: 'Disconnect from the cd changer' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect battery several times and switching' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 4 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Install bluetooth solution

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
The prior owner installed a bluetooth solution that uses an FM modulator (TranzitBLU HF ISFM2351) (
Original post Read captured discussion
Extra Wiring Harness?

Reconnect microphone plug

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
- disconnected and reconnected the microphone plug
Original post Read captured discussion
Extra Wiring Harness?

Disconnect battery several times and switching

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
- disconnecting the battery several times and switching from CAN to AMP
Original post Read captured discussion
Extra Wiring Harness?

Disconnect these wires and have zero experience

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
I need to disconnect these wires and have zero experience with wiring.
Original post Read captured discussion
Extra Wiring Harness?

Frequently discussed actions (6)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Disconnect battery several times and switching

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
- disconnecting the battery several times and switching from CAN to AMP
Original post Read captured discussion
Extra Wiring Harness?

Disconnect from the cd changer

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
- put MOST bridge on the cable inside the dash while the other end was disconnected from the CD changer
Original post Read captured discussion
Extra Wiring Harness?

Disconnect these wires and have zero experience

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
I need to disconnect these wires and have zero experience with wiring.
Original post Read captured discussion
Extra Wiring Harness?

Install bluetooth solution

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
The prior owner installed a bluetooth solution that uses an FM modulator (TranzitBLU HF ISFM2351) (
Original post Read captured discussion
Extra Wiring Harness?

Reconnect microphone plug

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
- disconnected and reconnected the microphone plug
Original post Read captured discussion
Extra Wiring Harness?

Use fm modulator (tranzitblu hf isfm2351) (

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
The prior owner installed a bluetooth solution that uses an FM modulator (TranzitBLU HF ISFM2351) (
Original post Read captured discussion
Extra Wiring Harness?

Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link
That fixed it!
Original post Read captured discussion
No unique explicit quoted action; no causal link assigned

Generation: 20261026T222516Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi, I am in the process of upgrading to PCCM+. The prior owner installed a bluetooth solution that uses an FM modulator (TranzitBLU HF ISFM2351) ( https://isimple.com/products/install...your-car-radio ). In the process of removing this module, I found where they tied into the power and ground. What's perplexing is that they tied into a wiring harness that is not connected to anything. Is it normal to have this harness that's not connected to anything? Perhaps it's for a system or options my car does not have? I need to disconnect these wires and have zero experience with wiring. Any tips would be appreciated. Bluetooth module is tied into this harness that is not connected to anything.

POST 2Original post

IIRC that unused connector was for the optional phone package. It is a good place to tap for + and - for an accessory

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 18670097

That is very helpful - thank you!

POST 4 / ORIGINAL POSTEROriginal post

I worked on this installation some more and and faced the dreaded "No Sound" problem. The radio and CarPlay appear to work, just without any sound. This is a 2003 C4S with BOSE & MOST. Things I have tried: - disconnecting the battery several times and switching from CAN to AMP - put MOST bridge on CD changer as per instructions (even though the other end of that cable does not attach to PCCM so I am not sure why that is needed) - put MOST bridge on the cable inside the dash while the other end was disconnected from the CD changer - disconnected and reconnected the microphone plug - disconnected and reconnected the old stereo harness (does not "click" into the PCCM+ - I tried that several times. It's in there but not enough to click) What I did not try was to unplug the plastic cap on the MOST adaptor and actually plugging in the cable that goes to the CD changer. That fixed it!

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