I recently purchased and installed a Regetek 7" Touchscreen head unit in my 2004 Mazda 3 GT sedan. I used the Metra 70-7903 wiring harness (sorry, I can't post links yet, but both products are on Amazon, bear with me please).
The head unit itself works fine, however after the installation, I noticed 3 lighting issues:
1) The red lighting behind the HVAC knobs no longer turns on.
2) When I turn the headlights on, the headlight indicator on the dash no longer turns on.
3) If I turn off the engine and open the door without turning off the headlights, there should be an alarm that reminds me to turn off the headlights; this alarm no longer works either.
I'm sure these issues all have the same root cause. I just don't know what it is. I've tried messing around with the illumination wire of the head unit to no avail. Does anyone with a better grasp of the car's electronics have any ideas?
Thanks!
The head unit itself works fine, however after the installation, I noticed 3 lighting issues:
1) The red lighting behind the HVAC knobs no longer turns on.
2) When I turn the headlights on, the headlight indicator on the dash no longer turns on.
3) If I turn off the engine and open the door without turning off the headlights, there should be an alarm that reminds me to turn off the headlights; this alarm no longer works either.
I'm sure these issues all have the same root cause. I just don't know what it is. I've tried messing around with the illumination wire of the head unit to no avail. Does anyone with a better grasp of the car's electronics have any ideas?
Thanks!
