Strange. Perhaps it's a mod conflict?

Please go into the editor, in the initialization box (attributes) of the unit, put: SAN_Headlamp_DebugMode = 3;

Then launch the preview, try turning on the lamp (press the buttons). Follow that up by sending me your RPT via something like www.pastebin.com

Kind regards,
Sanchez

Try today but get some trouble :/
In editor ==> http://i.imgur.com/ryLBIFi.png

I try with your init var debugmode and try to active but ... not working
=> RPT
https://pastebin.com/WrTRENda

edit:
I try with mod from your googledrive but doesn't work too :(

EDIT 2:
Yup i think you need to adjust this because it doesn't work standalone but work with cba or something like that :)
It's fixed for me but only when i use it with all my other mod ^^

Quite strange. I'll have to do some testing of my own.

That first error message about the mod.paa file not being found makes no sense, oh well.

Last time I tested, the mod worked fine standalone - however I did make some changes here and there so I'll test again. Thanks for the report :)

Alright well I found the issue you were on about.

Updated the mod, it should work all dandy now :)

Thanks for your work.
I don't use it standalone :-) only for test ^^

You may add some information for player wanna use in MP scenario with CfgRemoteExec.hpp need to add something like:
F(SAN_fnc_ToggleHeadlamp,ANYONE)
F(SAN_fnc_sendJIPinfo,ANYONE)

That is indeed something I more or less forgot yeah. Thanks

This is what I used for my exile server, thanks for all the help!

class CfgRemoteExec
{
class Functions
{
mode = 1;
jip = 0;

class ExileServer_system_network_dispatchIncomingMessage { allowedTargets=2; };
class SAN_fnc_ToggleHeadlamp { allowedTargets=0; };
class SAN_fnc_sendJIPinfo { allowedTargets=0; };
};

class Commands
{
mode = 0;
jip = 0;
};

This is not bug, just "Headlamps" work only Night time in my Exile srever.