hey guys,

i have in my car the gauge cluster from ralliart that has on the left to right

volts, oil temp and boost in bars
the gauge in question is the oil temp.

the sensor wire is run to the oil drain plug

now i did an oil change and when i turned on the ignition after, temp gauge reads max.. ~150

can anyone tell me why?

if anyone has a wiring schematic i would be able to see if some wire is probably grounding off and causing it..

HELP!!!!!!