it's not that simple.

you have to make a new bridge. that's why it's so hard. i've replaced the old transistors with fets, and it didn't make any difference. if it was that simple, microamps wouldn't be charging $20 to do it. everyone would be doing it themselves. unfortunately every brand is different too. i'm still waiting to get the right instructions for ZZ's. i've got just enough fets to do 2 cars, but no instructions!