Thanks for the responce.
I think I will poke around today and find a better way to get the chmsl to work. I will test my theory about switching the grounds and post results.
Just FYI. The StopLogic modual is supose to function as follows...
There are three terminals labled R/T, L/T and Stop.
With power applied to BOTH R/T and L/T, Stop wil have power.
With power applied to R/T OR L/T, Stop will have no power.
With power to BOTH R/T and L/T but modulated at one to simulate a turn, stop will have power.
Thanks for confirming my thoughts that the installers did it wrong.