(01-25-2026, 10:06 PM)trasgu_driver Wrote: Hi! I'm going to retrofit the alarm and motion sensor to my 2018 XC40.
I thought it had an alarm because the red light was flashing, but no… there's neither an alarm nor a sensor. The sensor mounted in the dome light has factory wiring, so it's just a matter of installing it, but the alarm under the windshield wipers has no wiring at all, and I'll have to make some myself. 
I know it has three wires:
-red (fuse 30)
-brown (negative) 
-purple???

Can anyone tell me where to connect the brown and purple wires?

(01-26-2026, 12:22 PM)Marcp Wrote: Hi, this post explains everything.
https://forums.spaycetech.com/showthread.php?tid=100&page=3

(01-26-2026, 10:34 AM)Szigi Wrote:

(01-25-2026, 10:06 PM)trasgu_driver Wrote: Hi! I'm going to retrofit the alarm and motion sensor to my 2018 XC40.
I thought it had an alarm because the red light was flashing, but no… there's neither an alarm nor a sensor. The sensor mounted in the dome light has factory wiring, so it's just a matter of installing it, but the alarm under the windshield wipers has no wiring at all, and I'll have to make some myself. 
I know it has three wires:
-red (fuse 30)
-brown (negative) 
-purple???

Can anyone tell me where to connect the brown and purple wires?

Negative wire can be wiered anywere where you find a grounding point. Purplue is the lin cable, you will need to wire it to the CEM, the hard part will be to go past the firewall
I hope it helps and good luck!

(Yesterday, 09:57 AM)trasgu_driver Wrote:

(01-26-2026, 12:22 PM)Marcp Wrote: Hi, this post explains everything.
https://forums.spaycetech.com/showthread.php?tid=100&page=3

Hi mate! Thanks a lot for the info, it's really helpful for getting an idea! But...do you know where the CEM module is located on the XC40? And will the Orbit configuration be the same as on your XC60?

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(01-26-2026, 10:34 AM)Szigi Wrote:

(01-25-2026, 10:06 PM)trasgu_driver Wrote: Hi! I'm going to retrofit the alarm and motion sensor to my 2018 XC40.
I thought it had an alarm because the red light was flashing, but no… there's neither an alarm nor a sensor. The sensor mounted in the dome light has factory wiring, so it's just a matter of installing it, but the alarm under the windshield wipers has no wiring at all, and I'll have to make some myself. 
I know it has three wires:
-red (fuse 30)
-brown (negative) 
-purple???

Can anyone tell me where to connect the brown and purple wires?

Negative wire can be wiered anywere where you find a grounding point. Purplue is the lin cable, you will need to wire it to the CEM, the hard part will be to go past the firewall
I hope it helps and good luck!

 Thanks a lot for the info…do you know where the CEM module is located on the XC40?