Everything work fine except the startup/shutdown feature. I have to manually do this which is a pain because my car-puter is in the trunk. All can come up with is that the default 10ms pulse is not long enough to switch my mobo on/off. I guess I am going to have to get the programming cable (brainstem?) to test this out. Where can I get one without buying the DSATX again? Any other ideas of what might cause this behavior?