1991-99
Mitsubishi 3000GT Taillight/Corner LED Design
Here
is a description of the main 3 PCBs needed to convert the Mitsubishi
3000GT taillights and corner lights to LED arrays.
STOP/TAIL
This
is the STOP/TAIL section for LED taillight. It consist of
5 sections that can be individually lit. Each sections has
8 LEDs giving the PCB a total of 40 LEDs when all sections
are filled. If less then 8 LEDs are used in a section a resistor
has to be added to compensate for the missing LEDs. Large
connecting traces were used to better dissipate heat that
is created by the LEDs.
NOT TO SCALE
CORNER
The
corner PCB can be used in either the front corner lenses or
in the corner part of the taillight. There are 3 separate
sections which can be lit individually each holding 8 LEDs,
24 LEDs total.
NOT TO SCALE
PWM
A
PWM circuit is used to control the STOP/TAIL function. Since
the LEDs we use are very high flux and require higher currents
than regular LEDs we need to use a PWM. Instead of current
limiting using resistors to change the light level we pulse
the LEDs to achieve the same effect. This PWM has 28 positive
and 7 ground connections allowing you to connect two STOP/TAIL
PCBs. The board also allows you to set certain sections of
the STOP/TAIL PCB to run independently.
NOT
TO SCALE (Pixilated until complete)
This
image shows some of the possible configurations using the
PWM.