I had it wired to the radio harnass in both an EK Civic and a DC2 type R Integra... never had any problems blowing fuses, so either the above mentioned fuse-blowing install was done wrong, or something about the MR2 made it go wrong...? Should not be a problem though!

If the EDFC wiring parts are still the same as back in '05 when I got it, than it's a real piece of cake hooking it up to the radio harnass (self stripping connectors and such)
(I have a picture, but it shows how I mounted the control unit, not the actual wiring connections )