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)

Led resistance

sliderr
 Share

Recommended Posts

sliderr Member

sliderr

Posted
Posted

I replaced my 3rd brake light last week and noticed that my cruise-control stopped working, does anyone know how much ohm resistor you need to be able to use led 3rd taillight? i only had a 6-ohm here but that didn't seem to fix the issue..

Any help is appreciated.

kbrandsma Member

kbrandsma

Posted
Posted

Seems odd that the two would be tied together. Check fuses and/or revert back to stock third light to determine if it's the problem.

sliderr Member

sliderr

Posted
  • Author
Posted

They are .. revert to the stock light.. cruise works again.. i checked the fuses, cruise and brakes are on the same fuse group.. maybe thats why..

  • Moderators
Tool Pants Member

Tool Pants

Posted
  • Moderators
Posted

I do not remember the solution. But is has been mentioned before. A LED draws less power than an incandescent 12 volt bulb. Cruise does not work if the brake bulbs are burned out, or if the computer thinks they are because the voltage draw from the LEDs is less than what the computer wants to see. So you use a resistor to trick the computer into seeing the electrical draw it is happy with. But you already knew that..

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
 Share
Go to topic listing
×
×
  • 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.