making that, it won't matter anymore what you still have or not on car of the interlock system. Just that removing the control box will loose the rest of warning systems too ( key in &/or lights on if optioned )

the lights on option is just a matter of buzzer replacement.

this:




for this:



car is ready for the 4 prongs one, but when lights on buzzer was not optioned, the two prongs one was the one installed on same plug ( just two cavities on plug going anywhere )