19 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHIs PCM Retrofit really impossible?
Leading reported evidence
Replace wiring harness plug
Suggestion or failed attempt
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 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
wouldn't it just be a question of mounting the gps antenna and maybe changing the wiring harness plug?
Leading evidence: 'Replace wiring harness plug' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace wiring harness plug' (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.
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.
19 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.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T084359Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
the nav system REALLY can't be retrofit? Found this for $1300...
wouldn't it just be a question of mounting the gps antenna and maybe changing the wiring harness plug?
you probably already know, but that picture is of a PCM I, rather than a PCM II unit? I have never used the PCM I, but I think the PCM II is excellent. If you're going through the trouble of a retrofit, wouldn't you do PCM II?
I saw a 996 with GPS retrofit yesterday at the Rusnak service drive. There's a large GPS antenna mouse like thing on top of the roof right behind the front windshield. Strange place to install the antenna... seems like the wire came out of the area where the windshield and roof meets. Whose car is that by the way?
Matt,
What model year do you have? If you have pre-02, they you 'could' put PCM I into you car. Give Paris Audio in LA (I think) a call. Supposedly, someone over there has done it. You can't do PCM II, cause its on a fiber optic network. If you have a post MY02, I have no idea if PCM II can be retrofitted....
I have the latest Tequipment Boxster catalog.
It has a picture of PCM II and a part number of 000 044 900 70. Says it is for vehicles built after 8/02 with MOST, which is MY03. Of course this unit will not work with the older cars as they do not have MOST. Jeff
Ok, so this seems to be the spot. I have an 03 c4s with the bose, non-nav, radio. I just recently on eBay bought the PCM 2 headunit only (just the screen unit) to try and get the factory navigation system in the car. I can't find anyone to help me with the other parts that I need to do the retro fit. Do I need the navigation module or is that built in?
I thought it would be pretty "cookie cutter," but I can't seem to get anyone who know what parts i need without taking about the center console.
Can you help with the parts needed and any install advice?
I would really appreicate any light you could shed. I'm lost! Thank you,
Jon Pirie ([email removed])
The writeup for 03+ is on Renntech.org in this forum:
RennTech.org Forums > 996 Series (Carrera, GT3-1, TT, GT2) > 996 (Carrera) - DIY > DIY Articles - Carrera (996) - Accessories
