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dash top chrono/clock harness

 
Old 11-22-2014, 10:31 AM
  #31  
carlos50
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Hi gnat

I dont think we have such a law here in the UK?

Splicing of cables etc. uh oh

I just really like the idea of the clock on the dash top, I think it looks like its meant to be that way and without looks a bit bare now.

If its going to prove too much I will step away from this idea and maybe find one with it in the next 958 (hopefully a Turbo when they drop in price a bit more)?

Thanks for the quick reply

Carl
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Old 11-22-2014, 01:29 PM
  #32  
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Finding out if you'll need to do some wiring is pretty simple. Just pull the panel off and look. If there is a cable with a 4 pin plug (sorry my pics aren't working any more) then you would just need the clock and trim panel.
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Old 11-22-2014, 04:17 PM
  #33  
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Do you mean a 4 pin plug without anything plugged in or a plug that has to be removed to plug the new harness in?

How does the plastic cover come off?
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Old 11-22-2014, 06:10 PM
  #34  
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If it is there it won't be plugged into anything as it plugs into the clock modules. Porsche doesn't like to give you extra wires though, so I doubt its there.

A trim tool will pry it out pretty easily. Just go slow and don't force it. Getting it back on is a bit annoying, but again don't force it or you'll break the clips.
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Old 11-24-2014, 12:02 PM
  #35  
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Hi Mr Gnat! Thanks for responding. Send me an email bobgardner at mcnallyelectronics dot com, and I'll send you all the CAN IDs that were flying over the chrono bus. Is the red wire 5V or 12V? Inquiring minds want to know.
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Old 11-24-2014, 03:22 PM
  #36  
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Hi gnat

Assuming the cable isnt there, what will the back of the PCM unit look like at the location where the cable will plug in please? Am I right to think its a splice operation to tap into an existing harness?
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Old 11-24-2014, 03:46 PM
  #37  
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I have no idea since mine came with a clock. On the first page Sean Weeler reports actually making this modification so you might try reaching out to him for more info.
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Old 11-26-2014, 04:33 PM
  #38  
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Hi again. I've been trying to get my chrono to wakeup on the bench. As I mentioned previously, I have a couple of 500K log files that I recorded right at the chrono canh and canl using a kvaser and canking. Mmmm... makes me want a tuna sandwich.... anyway, I can ohm the canh and canl from the connector pins to the 82C250 can chip, but the 5V to the can chip just pops on for 200ms at poweron. The seconds vernier does its little zeroing waggle. My hypothesis is: it wants to see a certain can msg within 200ms of poweron, or else it goes back to sleep or something. I can make it reinit by turning the volts down to about 4.5 then back up above 5. I have a program running on an AT90CAN32 bd with a 2551 can chip, and I can send all the IDs from 0x100 to 0x6ff with 'dummy' payloads of all ff, 80, or 0. Was hoping it might recognize one of these as 'Turn on the lcd backlight' or 'latch this pattern in the seconds stepper motor' or something but with no 5V on the can chip, no RXD to the computer. Its a 100 pin tqfp under the display. Probably an nxp or an st arm. I'll send the captured log to anyone that wants to look. email at home over the Thanxgiving weekend is bobgardner at aol dot com. Next week, contact is bobgardner at mcnallyelectronics dot com. Thanks for you interest!

Shucks. I cant believe there arent any Porsche owners that dont want to see the can logs with the logger attached at the chrono. This is the interior can bus? Think I could find a collaborator on one of the other foums? Would some racers/rallyers want to customize the chrono operation?

Last edited by BobGardner; 11-30-2014 at 10:31 PM.
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Old 01-25-2015, 07:54 PM
  #39  
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Default cable for 987/991???

Can someone help me with the cable for the stopwatch on a 2006-2009 Porsche? Some pics or help on wich wire goes where?

Originally Posted by Sean Wheeler View Post
I just installed the Stopwatch/Chrono in my 2012 Cayenne Turbo. Very easy!
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Old 03-25-2015, 01:34 AM
  #40  
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Hi All,
Has anyone found a reliable source just to supply the plug / cable?
I've worked out the Porsche part no, should be : 999-656-273-40 but been unable to source it.
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Old 03-25-2015, 01:35 AM
  #41  
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I know the pin outs, from the 6-pins, only 4x are used.

Pin 1 is ground (Brown/White)
Pin 2 is CAN Low (Orange Brown)
Pin 3 is not connected.
Pin 4 is not connected.
Pin 5 is CAN High (Orange Violet)
Pin 6 is Live/Power (Red Yellow)
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Old 01-26-2016, 12:23 PM
  #42  
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Sorry, where can I buy this clock & the panel and the wire ?
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Old 11-01-2016, 07:41 PM
  #43  
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Binging this thread back from the dead - but I wish someone had found this before me and done the same..

Thought I'd pass along something I found - a source for the needed wiring harness (from Hong Kong of course..):

http://www.ebay.com/itm/262590024321 - Not cheap ($90) but 1/3rd the price the thieves on ebay who sell a kit for $900 wanted for their harness ($250..) which looked IDENTICAL. The vendor is "euro-ctmtuning" in case the ad goes missing.

I've ordered it (in for a penny.. in for a pound..)

I have the dash panel - new from Porsche - $139.00 (my local dealer will match the best price on parts I can find on-line if they are genuine Porsche parts), have two clocks - one sport/chrono and one "plain" one. I'd consider installing the sport/chrono - but don't know what button gets pushed to trigger the stopwatch.. so I'll probably install the "standard" one.

There are plenty of clocks - both kinds - available on Ebay. I suspect they're ones where the second hand fell off - and someone simply unscrewed the front bezel (it comes RIGHT OFF) and put the second hand back on, hopefully with a tiny bit of glue this time. Prices range from $130-300.

Anyone know if the sport-chrono can be used without the sport-chrono button? I know it has to be turned on by the dealer.. but how do you control it?
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Old 11-01-2016, 10:26 PM
  #44  
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Hi Guys
$90 is CRAZY for that cable, as you can get it direct from your local Porsche dealer via the service department.

Initially I started looking online with no joy, but you will be surprised what a phone call to your local dealership comes up with.
I was expecting $200+ but happily surprised on this one.

The part you need, the no. is 999-656-273-40.
It is a spare part order ex-Germany but should only be ~$10-20.

Last edited by roders; 11-01-2016 at 10:28 PM. Reason: Added Info
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Old 11-02-2016, 11:41 AM
  #45  
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Originally Posted by roders View Post
Hi Guys
$90 is CRAZY for that cable, as you can get it direct from your local Porsche dealer via the service department.

Initially I started looking online with no joy, but you will be surprised what a phone call to your local dealership comes up with.
I was expecting $200+ but happily surprised on this one.

The part you need, the no. is 999-656-273-40.
It is a spare part order ex-Germany but should only be ~$10-20.
If you punch that number into any Porsche parts website - nothing comes up. Is it something that only the parts guys can see? Have you bought one? I know most manufacturers will sell "repair" parts - like a cable stub with a connector - and I'd guess that's what this is. The trick is always finding out the PN, then finding a savy parts guy who knows how to order it.

BTW - if you plug that # into the all-knowing Google - guess what comes up as the only relevant response? This thread.

And $90 is way less crazy than the $250 the guy on eBay selling the clock kits wanted for the cable.
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