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Hello sir I was just reading some of your post and I was wandering if you can help me, I have a 1994 525I that was over heating and after reading some info here and there, I want to change all of the temperature sensor/sender but my problem is that there are 2 on the engine that have same plug (12621747281 black & 13621709966 blue) but looking at the plug itself one have 2 wires coming from the engine harness and the other only one. I was wandering if you can determent witch one plug where? I appreciate in advance for all your help and trouble