compustar 2w900fmas vs fortin key overrid

Ok, thank you for the answer! I have an other question, Is it necessary to use the 2nd ignition, 2nd starter or 2nd accessorie relay on a 2010 mazda 3? or I can simply cut the relay wire?

you shouldnt need any of them.

from what i remeber it has 2 acc wires, but one controls the radio only. if in doubt, power up all acc and ign wires.

I forgot to ask what to do for the clutch bypass... I think that I have to use the (-) status wire from the brain. Does i'm right? If i'm right, I have a problem because this wire is already used to communicate with the key bypass module...

i dont like to use the status wire to bypass the clutch. you still can use this, just diode isolate them if you are powering up more than 1 item.

i often take the 2nd negative start wire and use that to bypass the clutch.

Do you mean this wire?

Pin #5: RED / Black- This wire is a (-) 2nd Starter 200mA output. Normally the only vehicle this would be used on Nissan’s and older Ford’s. You may connect this wire to the purple pigtail of the additional

Do you know what is the color of the clutch swich wire? And is it really a negative wire?

power up both acc wires, i just checked and you do need both (called up my friend that did his mazda 3)