DeanoSonic Posted 7December, 2017 Report Share Posted 7December, 2017 Is anyone aware if I can mod the instrument cluster lighting to stay on permanently whenever the ignition is on? leaving the headlight switch on is not a solution as I want to retain the day/night function for the rest of the lighting so that the nav screen adjusts accordingly. The last auto electrician I spoke to said the lighting was controlled by the CANbus and that it was not possible to adjust the program. Any ideas? Link to comment Share on other sites More sharing options...
Bibbs Posted 8May, 2018 Report Share Posted 8May, 2018 Can you just find the illumination wire and tap it into the ignition wire? Link to comment Share on other sites More sharing options...
DeanoSonic Posted 8May, 2018 Author Report Share Posted 8May, 2018 I was hoping it would be that simple. But after speaking to several auto elecs, Porsche Au and my Porsche service specialist (PRT), I get the impression it can’t be done, no one knows how to do it or has done it before. The CANbus program appears not to have this option available or allow a hack that anyone I spoke to is aware of. I’ll check your suggestion when I’m passing another auto elec or Porsche specialist and if unsuccessful, continue my search online for any further solutions. Link to comment Share on other sites More sharing options...
Bibbs Posted 9May, 2018 Report Share Posted 9May, 2018 I spoke to a Porsche specialist here and he mentioned being able to setup to fogs as driving lights (always on DRLs). Maybe that would do the same? It was KTEC Autohouse in Perth. Link to comment Share on other sites More sharing options...
Redracn Posted 9May, 2018 Report Share Posted 9May, 2018 One solution is to put something like an Arduino with dual CAN Bus interfaces in between the cluster and the rest of the cars CAN Bus. The Arduino would relay all CAN messages exactly except for the one that controls the backlight which it would modify before passing on. The message and bits within the message that contains the backlight information would need to be identified but other than that the rest is easy. Link to comment Share on other sites More sharing options...
DeanoSonic Posted 9May, 2018 Author Report Share Posted 9May, 2018 Great suggestions guys! Bibbs, you may be onto something. Will make that suggestion to the auto elec... Red, I have a buddy who works with Arduino’s. I’ll call him next chance I get and run this past him. Link to comment Share on other sites More sharing options...
Bibbs Posted 9May, 2018 Report Share Posted 9May, 2018 The guy said he can do it via the ecu programming. He didn’t have a PWIS (sp) but something similar. He he used it to sort out my non functioning CControl light. Link to comment Share on other sites More sharing options...
DeanoSonic Posted 9May, 2018 Author Report Share Posted 9May, 2018 I’m in Sydney Bibbs but I’ll give KTEC Autohaus a call. Sounds promising. Link to comment Share on other sites More sharing options...
AAAC Posted 17May, 2018 Report Share Posted 17May, 2018 KTEC did the coding on my 987.2 Cayman. The fog light and LED strip behave like a DRL. My car has halogen lights and it was coded to xenon to bring about the change. I changed the fog lights. The xenon cars already have LED ‘fog’ lamps that are used as DRL. The coding does not turn on the instrument lighting. I am away from my car for a while but from memory I think that the cluster has a light sensor on it. If you cover this you might get the desired effect. Failing that, try covering the light sensor in the centre of the dash at the base of the windscreen. Link to comment Share on other sites More sharing options...
DeanoSonic Posted 17May, 2018 Author Report Share Posted 17May, 2018 Thanks for the reply’s guys. Some great lateral thinking there. I called KTEC, and with them in Perth and me in Sydney, he didn’t have any definitive answer without plugging my vehicle into their Durametric Pro tool to take a look. He suggested a sister Autohaus in Sydney could do it but on enquiry, I found they use a PIWIS didnostic tool with different capabilities. I’m going to try them next or someone with a Durametric Pro if I can find one. AAAC; I’ll take a look at the light sensor scenario. My 987.1 has bi-xenon already if it makes any difference so we’ll see how that plays out. Red; I haven’t crossed paths with my Arduino mate yet. Will advise if I have any luck. Cheers, D Link to comment Share on other sites More sharing options...
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