Hi guys, I've own a R32 GST-t for a week now and for some reasons, it couldn't start after topping up my fuel. It doesn't even tick at all like a bad battery and the battery reads about 11.8 to 12.5 when in the On key position.
So I got to borrow a battery from one of my mates and I accidentally connect the wrong terminals (positive on negative and negative on positive), and then I place it back again and nothing is working except for the headlights.
After that we tried to hill start the car and it started running (woohoo) but none of the electrics are working except for headlights, turbo timer and the cluster clock backlight but clock isn't working. (Battery showing from 11.2 to 10.5)
So after driving for about 15 mins, all the electrics went back online but the after market gauges and water temp in the factory cluster was flickering and the head unit doesn't work.
after driving for another 10 mins or so, the battery voltage keeps dropping from 10.5 to 9.8 and so on.
Is it a bad alternator/battery/diode?