Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Strange side marker behavior after installing LED light (electrical)


Recommended Posts

So, I tried (keyword) replacing the front side signals (blinkers) with canbus LED bulbs (built-in load resistors).

After I put the LED bulbs in and I turn the lights on (parking or headlights), the side lights no longer light up. The tail lights will come on, the city lights come on, but nothing from the side markers (the orange light housing that most everyone do as their 1st mod). Anyways, the lights will blink fine (I had it re-programmed to blink as indicators) when I put on the turn signal, hazards or arm/disarm alarm. But the lights won't come on now. Even more strange, when I put the incandescent bulbs back in, the incandescent bulbs also do not come on (again, they blink just fine with turn signal/haz, etc.).

I just quickly tried with a (low end) volt meter to the bulb socket and it seems I get a steady 10v when I turn the lights on, but and nothing changes when I turn the lights off and on again. What should I be looking for? It is as if there isn't sufficient current/power going to the LED or incandescent bulb to power it. I have since put the incandescent bulbs back in, disconnect the battery for about 15 sec, try again... but still nothing changed. Any idea/suggestion? Thanks!

Edited by lithium1330
Link to comment
Share on other sites

There might be a fault code in the front control module, the computer thinks there is a problem so no longer activates the ground path for the circuit. Check for codes, clear any and check operation.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.