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Old 20-03-2007   #1
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negative / positive pulse

Hi all, I am fitting a remote central door lock kit at the weekend and i believe that the punto mk11 is -ve pulse. I am fine with that but can anyone explain what is the difference between the two?????
also where is the best place to make the connections to the central locking ?

many thanks

dave
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Old 20-03-2007   #2
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Re: negative / positive pulse

-ve pulsed systems require a negative trigger to set off the motors. +ve pulsed systems require a +ve trigger to set off the motors.
I fairly sure the mk1 uses -ve pulse but not too sure about the mk11... havent seen one yet
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Old 20-03-2007   #3
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Re: negative / positive pulse

thanks for quick reply , but what is a negative trigger? what is a positive trigger, i'm guessing the answer is really simple and i am just thick

thanks
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Old 20-03-2007   #4
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Re: negative / positive pulse

btw, easiest place to make connections to an existing system would probably be in the front wing if i remember correctly - remove the wheel arch liner and from there you should be able to see where the wires come in from the hinge
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Old 20-03-2007   #5
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Re: negative / positive pulse

Quote Originally Posted by dibley1970 View Post
thanks for quick reply , but what is a negative trigger? what is a positive trigger, i'm guessing the answer is really simple and i am just thick

thanks
a negative trigger is where the trigger wire activates the door motors when it is ground. positive trigger activates when the trigger wire receives +12v.
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Old 20-03-2007   #6
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Re: negative / positive pulse

thanks Xen, that now makes more sense,

thanks again
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Old 20-03-2007   #7
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Re: negative / positive pulse

is it for an alarm/remote locking? IIRC the trigger wires on the standard c/l system are white and light blue. one triggers the doors to unlock when they get a -ve pulse and the other triggers them to unlock on a -ve pulse. if the alarm/remote locking device gives out a -ve pulse then its simply a case of connecting the trigger wires from the alarm/remote locking device to the c/l trigger wires (doesnt matter if you do it on the pass side or drivers side, it will still activate all the locks.)
if the doors lock when there supposed to open or ice versa, switch the triggers around
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Old 20-03-2007   #8
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Re: negative / positive pulse

not an alarm , just remote locking , Haynes manual should arrive in the morning so should be able to sort the wires from that
cheers
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Old 20-03-2007   #9
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Re: negative / positive pulse

have you checked the alarm wiring guides in the security section?
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