LED Tail Lights and third brake light.
Thread Starter
Intermediate
Joined: Nov 2015
Posts: 31
Likes: 0
LED Tail Lights and third brake light.
Just a heads up. I installed the LEDs and they were to die for. However, as most of you know LEDs draw less current than than OEM lights. Conclusion, I had to reinstall my OEMs because the LEDs caused the ABS and PSM to malfunction and throw warnig lights as they are all on the same circuit. Everything is fine now except I can't use my LED lights.
Rennlist Member
Joined: Jun 2010
Posts: 3,707
Likes: 744
You just replaced the bulbs or did you install new tails? Most new LED tails come with resistors installed. You may be able to keep the tails and just replace the incandescent bulb in the third brake light to satisfy the ABS and PSM.
Drifting
Joined: Sep 2001
Posts: 2,467
Likes: 16
From: redmond wa
I used a 50W 12 volt landscape bulb and a minature relay to simulate overall incandescent bulb impedance.
Relay armature coil is connected to brake light circuit and ground, bulb is "powered" with NC, Normally Closed, relay contacts. Bulb low filament resistance simulates brake light off impedance (enables CC), bulb is in circuit for a short period upon brake application simulating high inrush current.
