BeGiN NeR

Hi, on my 964 I changed the lights into gauges and I changed batery. I waited for some parts and the car drove without gauges for a while. When I put the gauges, the airbag light remained on. I read here on the forum that this problem have got more people and that it must set airbag whit diagnostic.

but..

when i returned the gauges the oil temperature is still in red. even when the car is cold so the gauge still shows the maximum temperature. I tried to disconnect and connect the sensor on the motor and the meter responds. when I disconnect the sensor, the temperature drops down and after connection it is red again. the new sensor does the same problem.

I will be happy for any advice thank you