Hi!
I have a FIAT Ducato Camping-Car, 2.8 JTD VGT, 2005.
It has door central lock.


I bought an alarm which has 6 wires to connect to the vehicle central locking system:

- 2 (orange+orange/black): the manual says to ignore them;

- 2(yellow+yellow/black): the manual says to connect both of them either to ground, if central lock is negative trigger, or to +12V, if central lock is positive trigger;

- 1 white: the manual says to connect it to “lock signal” (whatever that is!);

- 1 white/black: the manual says to connect it to “unlock signal” (???)

I disassembled one door of my car and found that it has 5 wires: 2 thick and 3 thin.

I tested and found out that:

- When I lock, one of the thick wires get +12V for 1 second; when I unlock the same happens with the OTHER thick wire:
- When the doors ARE LOCKED (in permanence, not for a second like the thick wires), one of the THIN wires is +3,38V, while the other is grounded; when the doors are UNLOCKED the same occurs with another thin wire;
- The third thin wire is always grounded.

OK!! My question is:

HOW DO I CONNECT THE TWO DAMN THINGS????

Can someone PLEEEEEEASE help me??

Thank you so much!

might be off help
https://www.fiatforum.com/security/24767-alarm-wiring-information.html

Thanks!!

I figured it out now!