That won't work with the SW speedometer, as the lowest it requires is 3K PPM.

You may be able to use a Dakota Digital SGI-5 box to bump the VSS PPM signal to a higher value. And feed the SW speedometer from it. I looked at the SGI-5 instructions and bumping up a 2K signal is not mentioned. Best to get in touch with them to see if it can.

The input to the SGI-5 box would be from ECM pin A10. A digital, 2K PPM signal.

RBob.