i have my tod turned off with out a flashing light if you put your switch on the switched power feed to the tod unit it will not flash the light !!! it will turn on the abs light and the abs will not work even if you turn the tod back on unless you turn off the key to me that is a good thing as i thank the abs sucks in bad weahter , so now i can start the engine turn the tod off and back on and no more abs that wont stop. btw you can turn the tod on & off at highway speed with no problems , i have had my tod off for the biggest part of the last 3 months only turn it on if i need it work fine. the next time i have the seat out ( 2 weeks ) i will post witch wire i have the switch on