Hi

Replaced the wiring harness on my 92 400E this weekend (the insulation on the wires was completly cracked). Everything went fine till I got to the B11/2 connector (4 pin round) when I noticed the harness connector is keyed but the temp sender is not

I checked the sensor with an ohm meter and found resistance on the pins diagonally (4.66 and 4.61Kohms temp was maybe 50F) So I figure it doesnt matter what orientation the connector is plugged in. Correct?

My real question is why did they use two seperate sensors? If both circuts read the same value wouldnt it have been better to have one sensor with two sets of wires?

Thanks
Paul