I am installing a water temp gauge,If you could tell me which wire off the pcm I use for the signal wire.Thanx in advance.

 

There is no wire off the pcm that you can use. A temp gauge should have it's own sensor and does not rely on the pcm for any info, i.e. the gauge you are installing should have a sensor you put in the engine to drive it.

 

Thanks Rob I did a search found out what I have to do I appreciate you helping me out.