hey,
yesterday i installed a tachometer into my KE30 corolla, and its working fine, but now the charge light and oil lights dont come on when the key is in the 'ON' position, but the charge light comes on when the car is running and stays on, but no oil light.
temp gauge and fuel gauge dont work either anymore but did prior to installing the tacho,
does anybody know how to fix this ? i would prefer not to have to take it into a shop as i cant afford to, but i have a test light and multimeter with me at home.