Ok guys, had the three latin lovers show up. Just had friend read the abs. Here is what was found:

1. Engine speed input signal intermittent or missing
2. Shuttle valve switch failure
3. ECU ground or reference ground fault
4. Pump relay open circuit
5. RR outlet valve
6. Short to internal supply
7. Shuttle valve switch electrical failure.

He tells me that most of this looks like a ground issue. I have done the bypass - not sure why I am getting shuttle valve codes? I believe the abs is grounded behind the headlight, next the air box. Thoughts?

When I did the bypass last week, the 3 amigos went away until I tried to push the hdc button in high gear (yes, I know i must be in low for it to work). So what is going on?

 

There's a company on EBay that will rework the ABS unit with new shuttle valves, and go through the circuit board improving the grounds. Sounds like that's what you need.

 

is that what Option B does - bypasses the circuit board ground within the modulator?