2008 mazda 3 and viper

i have question regarding mazda 3..

this car has factory alarm..i know mazda3 without factory alarm is 1 wire system needs 1k resistor..

but with factory there is arm and disarm wire(with double pulse to unlock)..compustar has option to unlock before start and relock after start..that is not a problem..

but with dei product, there is no option to it..

what should i do? using lock/unlock from dei to arm/disarm wires to car side?it will disarm but won't unlock door right?

which way is the best?

1. arm(dei) to arm(car side) and use relay  with 1k resistor to lock/unlock wire(car side) to lock and disarm(dei) to disarm(car side) and unlock(dei) to unlock(car side)?

2. lock(dei) to arm(car side) and unlock(dei) to disarm(car side) and program ign lock and unlock? 

3. 2nd igntion to keysense wire to disarm without unlock door? or is this not working with mazda 3?

what viper system are you using?

arm is: BLACK/ blue (-) (In driver kick panel) disarm is: BLACK/ white (-) (double pulse) Increase door lock pulse to 3.5 seconds.Sylvain Rochon

MECP security specialist

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look at RS5 or something called "200ma status output" my paperwork says that it can be used to activate the "keysense" wire which turns off the factory anti-theft without unlocking the doors.

Did you try what I wrote, pdl in driver kick panel with 3.5 second pulse....I think you need double pulse to unlock...Sylvain Rochon

MECP security specialist

Tech support for remote starters

26 Years of experience counts

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power up keysense, it will disarm.Ted

2nd Year Tier 1 Medical School

Still installing as a hobby...pays for groceries

Compustar Expert

Yes key sense will disarm in (+) but will disable oem remotes while in remote start mode. It's preferable to use the arm and disarm wires in the driver kick panel with door lock pulse programmed in 3.5 seconds. connect your lock and re-arm wires together, do the same with unlock and disarm. While remote starting, the short pulse from the disarm wire will disarm the oem alarm without unlocking the doors, the 3.5 pulse of the power door lock wires will unlock all doors together in one shot. I've done hundreds that way and it works very good.Sylvain Rochon

MECP security specialist

Tech support for remote starters

26 Years of experience counts

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I always use the purple 2nd starter (-) output to rearm on DEI stuff and lt GREEN/ black to disarm

syl20rochon wrote: Yes key sense will disarm in (+) but will disable oem remotes while in remote start mode. It's preferable to use the arm and disarm wires in the driver kick panel with door lock pulse programmed in 3.5 seconds. connect your lock and re-arm wires together, do the same with unlock and disarm. While remote starting, the short pulse from the disarm wire will disarm the oem alarm without unlocking the doors, the 3.5 pulse of the power door lock wires will unlock all doors together in one shot. I've done hundreds that way and it works very good.

good information, thank you, but a quick question. would this setup also work if i were to program the door lock pulse to .8 seconds? i want to keep my factory setup, which is single pulse to unlock drivers door, double pulse opens all others. im guessing a 3.5second pulse emulates a double pulse.

syl20rochon wrote: Yes key sense will disarm in (+) but will disable oem remotes while in remote start mode. It's preferable to use the arm and disarm wires in the driver kick panel with door lock pulse programmed in 3.5 seconds. connect your lock and re-arm wires together, do the same with unlock and disarm. While remote starting, the short pulse from the disarm wire will disarm the oem alarm without unlocking the doors, the 3.5 pulse of the power door lock wires will unlock all doors together in one shot. I've done hundreds that way and it works very good.

my mazda still unlocks the doors when it remote starts. i can't find a feature that i can turn off or on that could be the cause of it. also, setting the 3.5 second door lock kills the ability to only unlock the drivers door, even with the remote keyless entry.