R
Raul Rivera
Guest
I want to install a relay that will light up my third brake light on my car
when a certain signal is generated by the ECU. The problem is, the brake
light circuit is also wired to the brake pedal and if I activate the light
with the ECU signal, won't the current also flow back throught the brake
wiring? Do I have to install diodes on both circuits so this won't happen?
Here are more specifics...
I have an -88 Honda CRX Si car with an engine swap. The new engine uses
Honda's VTEC technology. I put a VTEC sticker on my third brake light so
when the brakes are depressed, the VTEC sticker lights up.
VTEC is activated by the ECU at 6000 rpms and I want to use this signal via
a relay to light the VTEC sticker. My concern is that when that happens, the
current may pass back to the brake circuit. The same when I depress the
brakes - the current will flow back to the ECU.
HELP!
when a certain signal is generated by the ECU. The problem is, the brake
light circuit is also wired to the brake pedal and if I activate the light
with the ECU signal, won't the current also flow back throught the brake
wiring? Do I have to install diodes on both circuits so this won't happen?
Here are more specifics...
I have an -88 Honda CRX Si car with an engine swap. The new engine uses
Honda's VTEC technology. I put a VTEC sticker on my third brake light so
when the brakes are depressed, the VTEC sticker lights up.
VTEC is activated by the ECU at 6000 rpms and I want to use this signal via
a relay to light the VTEC sticker. My concern is that when that happens, the
current may pass back to the brake circuit. The same when I depress the
brakes - the current will flow back to the ECU.
HELP!