Thanks for the reply.

I have tried with the probe wired both ways.

It worked with an earlier version of firmware, but I can't seem to get it to work with the Xmas version of the firmware I downloaded from MadModder. https://madmodder.net/index.php?acti...0;attach=39115.

From my understanding of the manual the probe signal is PROBE terminal to +12V-I.

I don't see how it can work that way with the +12V-I connected to the tool. (grounded out) But like I said, I've tried it both ways.

I have also tried PROBE to Ground. (didn't work)

The only way I see that it could work would be if tool was isolated from ground.