# Question about lighting **URL:** \ **Category:** Free discussion\ **Created:** [June 18, 2025, 4:41pm UTC](https://forum.ewelink.cc/t/question-about-lighting/183632 "2025-06-18T16:41:05Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![sgz-sonoff](https://avatars.discourse-cdn.com/v4/letter/s/e19adc/32.png) [@sgz-sonoff](https://forum.ewelink.cc/u/sgz-sonoff)\ **Post date:** [June 18, 2025, 4:41pm UTC](https://forum.ewelink.cc/t/question-about-lighting/183632/1 "2025-06-18T16:41:05Z")
I have bought a **Mini R4** and a MINIR4M to test at home, and i’m trying to decide best where to put them, behind the ceiling rose of behind the first switch in a 2 or 3 switch chain [![r/sonoff - This is the wiring diagram they provide.|722.972972972973x750](https://europe1.discourse-cdn.com/flex005/uploads/ewelinkforum/original/2X/9/93b2a727ed3fde44417eefc32f3a18ed658a8ed3.png)](https://preview.redd.it/question-about-lighting-v0-l6p8d338ei6f1.png?width=856&format=png&auto=webp&s=3f597ee7644a19e37419913aef029a9cedb2d4b4) This is the wiring diagram they provide. [![r/sonoff - This is my proposed wiring|750x465.31219028741333](https://europe1.discourse-cdn.com/flex005/uploads/ewelinkforum/original/2X/e/ef8b5ad9914db52ad9a12fa4f9bacdc00b90238f.png)](https://preview.redd.it/question-about-lighting-v0-uj54wgp6di6f1.png?width=2018&format=png&auto=webp&s=6b65a1331c5084ec7db6cd436378f7799d402730) This is my proposed wiring This is how I plan to use them, or situations like this. So the locactions for the sonoff switch could be at A (in the 1st switch box) or B (behind the ceiling rose), in both cases wiring cable C into S1/S2 on the Sonoff. I’d much rather locate the Sonoff at point A, just for ease of access. Instead of cable C being a 2-core+E I could make it a 3-core+E and take a neutral to the switch box, which the Sonoff switch needs. So my first question is, do I need another core taking the N back from the Sonoff to the rose (cable D in the top diagram) or can I skip this and connect the lights to the group neutral, which will arrive behind the rose (point F on the top diagram) so it would looke like this: [![r/sonoff - Question about lighting|732.4492979719189x750](https://europe1.discourse-cdn.com/flex005/uploads/ewelinkforum/original/2X/f/fe1744c0b41e13b3575a966579bdf83121c02ddc.jpeg)](https://preview.redd.it/question-about-lighting-v0-212rvelkfi6f1.png?width=1252&format=png&auto=webp&s=caf43ea93323650f2f939044caae628189b60986) can the light be connected to the mains neutral direct, or does it have to be connected to the sonoff switch N terminal. another way to look at this: are the two N terminals on the Sonoff switch permanently connected together (hard-wired inside the switch, whatever the state of the switch)? If so, then the lights can be connected to the mains neutral as in the last diagram above. ---
**Author:** ![sgz-sonoff](https://avatars.discourse-cdn.com/v4/letter/s/e19adc/32.png) [@sgz-sonoff](https://forum.ewelink.cc/u/sgz-sonoff)\ **Post date:** [June 25, 2025, 10:23am UTC](https://forum.ewelink.cc/t/question-about-lighting/183632/2 "2025-06-25T10:23:37Z")
Anyone? ---
**Author:** ![kalle-ol](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.ewelink.cc/kalle-ol/32/8294_2.png) [@kalle-ol](https://forum.ewelink.cc/u/kalle-ol)\ **Post date:** [June 25, 2025, 11:44am UTC](https://forum.ewelink.cc/t/question-about-lighting/183632/3 "2025-06-25T11:44:05Z")
Both N-terminals on the Sonoff switch are connected internally. Therefore, it is sufficient to connect one N-wire. ---
**Author:** ![sgz-sonoff](https://avatars.discourse-cdn.com/v4/letter/s/e19adc/32.png) [@sgz-sonoff](https://forum.ewelink.cc/u/sgz-sonoff)\ **Post date:** [June 25, 2025, 11:58am UTC](https://forum.ewelink.cc/t/question-about-lighting/183632/4 "2025-06-25T11:58:17Z")
Thank you! Big help!