2nd Gen Non-Engine/Transmission Tach wire code for 97

[RedRamer]

Can someone help me look up the color code for the tach on a 1997 in the shop manual?

Location would be nice too behind the instrument panel or engine firewall.

thanks

 

[ata]

The wire should be GY/LB Gray and Light Blue from the PCM to the Tachometer. Wire should be in cavity C-31 at PCM. This Info. is from the 97 Dodge Service Manual.

 

[RedRamer]

Thanks

My haynes shows GR/LB to the first connection, then GR/BK from there to the tach.

Behind the cluster I have both!

goober

 

[RedRamer]

ata;

My haynes does not tell me much on this.

Does your shop manual tell you what the test proceedure is for the engine speed sensor using these wires.

Something fishy here.

I get no voltage fluctuation with engine speed. I took a reading right off the sensor wire GREY/Black on the front timing wheel and behind the instument cluster. Tach works though.

thanks

 

[ata]

Goober, The crankshaft position sensor sends a magnetic pulse to the PCM which changes it to a frequency (100 Hz ) and sends it to the Tach. The electronic integrated circuit in the Tach reads and analyzes the signal. So there is no apparent voltage in the system.

 

[RedRamer]

thanks again.

That's why I'm having such a darn time installing this remote starter.

Tach wire will have to go somewhere else, I guess.

goober