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Can someone tell me what color and number wires go from the handheld to the ECU. My handheld is not reading from the ECU. I have emailed tech support but no answer back. Thank you.

James r fields jr

If handheld is coming, but not communicating.

1.  ECU must be on.

2.  Unplug handheld cable from main harness and plug back in.

3.  Handheld cable may be bad.

Their are 2 versions of handheld cables.  Depending on which version handheld you have.  One has 2 plugs for handheld and the other has a single USB-C.  On the other end there will be a phono plug and a 2 wire connector.

Yes it's the older style 2 plug. I have unplugged it multiple times. The handheld cable has been fixed once before.

James r fields jr

Hey Nova, for wiring harness pin-outs and colors, see the thread above this one.