Installing clock from Mazda 626 - wiring question
Posted: Mon Mar 12, 2012 5:11 pm
I've acquired a clock/cubby hole from a mazda 626 that I wish to install and I could do with some advice on the wiring, regarding the illumination.
It's a 5 wire device. I've identified the GND, ACC and +12V leads.
With power on, the clock functions. Connecting the ACC illuminates the backlight.
There are two more wires, TNS + and -. Connecting TNS+ to 12V causes the backlight to go off. I assume that the combination of TNS + and TNS - was connected to some form of dashboard illumination dimmer and the side/headlights relay.
I'm considering connecting the +12V and ACC to the leisure battery and just putting a pot in series with the backlight bulb to allow a variably illuminated clock while parked up.
I would however be grateful if anyone can explain how the TNS+ and - would normally be wired as I may be able to work a better solution than the one above.
Thanks in advance.
It's a 5 wire device. I've identified the GND, ACC and +12V leads.
With power on, the clock functions. Connecting the ACC illuminates the backlight.
There are two more wires, TNS + and -. Connecting TNS+ to 12V causes the backlight to go off. I assume that the combination of TNS + and TNS - was connected to some form of dashboard illumination dimmer and the side/headlights relay.
I'm considering connecting the +12V and ACC to the leisure battery and just putting a pot in series with the backlight bulb to allow a variably illuminated clock while parked up.
I would however be grateful if anyone can explain how the TNS+ and - would normally be wired as I may be able to work a better solution than the one above.
Thanks in advance.
