What is the difference between the normal window switch and the modified one for ls1's? Does the normal one work fine whats the deal there? thanks jamescb77

 

If mean a new MSD from a retailer,then it will not work on an LS1 unless you send it back to MSD and have it modified for the LS1 signal. Which, I believe is a 5 volt signal. Additionally, you will also be required to cut the two loops as in a 4 cylinder application. Other than that, they work great!
Hope this helps,
Eric

 

I just cut the loops and called it good. Many others have done the same and not had any problems.