turn signal bink fast after trailer wiring install
03-05-2010, 08:53 AM
#1
Newbie
Thread Starter
Join Date: Apr 2009
Location: chicago IL
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
02 ML320
turn signal bink fast after trailer wiring install
I just installed a trailer wiring kit and now both left and right trun signals blink fast. all the bulbs are fine and i tested the wiring with a test light and it is working. i wired the harness right into the factory harness connector and i didnt even use those crimp connectors they supply with the kit. any ideas on how to stop this.
03-06-2010, 04:21 PM
#2
Super Member
The turn signal relays are getting overloaded..
I just installed a trailer wiring kit and now both left and right trun signals blink fast. all the bulbs are fine and i tested the wiring with a test light and it is working. i wired the harness right into the factory harness connector and i didnt even use those crimp connectors they supply with the kit. any ideas on how to stop this.
The turn signal blinks are controlled by 2 (one for left and one for right) relays in the fusebox.
If the current drawn through them is too much, relays will do this - they flip back and forth too fast...which causes the rapid blinking...
In Electrical Engineering, there is a specific term for this behavior of relays...can't remember it off the back...but it is a well known behavior..
09-18-2013, 12:47 PM
#3
Junior Member
Join Date: Sep 2013
Location: Johannesburg, South Africa
Posts: 17
Received 0 Likes
on
0 Posts
1999 ML320, 2009 Cayenne GTS
Hi
Sorry to resurrect an old old thread, but I have the same problem with high speed flashing - with no trailer attached. I disconnected the harness near the fuel filler hose and the flashing returned to normal... Is this expected behaviour?
Sorry to resurrect an old old thread, but I have the same problem with high speed flashing - with no trailer attached. I disconnected the harness near the fuel filler hose and the flashing returned to normal... Is this expected behaviour?
