A VSS/Dakota digital question for someone smarter than me..

[suburban99]

1972 K10 LQ4 swap, TH350 NP205. Truck starts runs drives good. Had a misfire problem that was cured by adding a Dakota digital SEN-01-4160 inline on the speedo cable and a SGI-5E generator interface in the cab. When I plug my Bosch 1100 in to read live data, I have no speed. The red light on the Interface flashes when truck is moving and I do not get the misfires I was getting previously. So I assume that the ECM knows the truck is moving, just not how fast it's going or if it's under load.
I have the following wires hooked to the interface:

Power = Power when key on
Ground = Chassis ground and black wire on speedo cable pulser
Sensor round = Pin 23 red on the ECM (VSS reference low 6.0 only)
Signal in=grey wire on speedo cable pulser
Sensor PWR= no wires
Out 1= no wires
Out 2= no wires
Out 3= To ECM pin 22 red (VSS speed sensor signal)
Out 4= no wires
Out 5= no wires

Interface is programmed for L-H and 128000...

I have swapped wire on 22-23 and 23-22 but truck misfires, and no speed is shown on Bosch 1100.

I called DD today and they said only use 1 wire from the ECM (VSS speed sensor) and wire it to Out 3..then cap off the wire on pin 22...I tried it but truck misfired. Hopefully some's done the same thing and knows what I am missing. Eventually I want to get truck tuned so I will need the speed to ECM to work according to the tuner?..