January 22, 201412 yr I installed els and also more 3 compatible cars, the lights work normaly ... However I can not activate the siren when tightening the "H" which is the default, however it beeps but the siren dont startt ... I do not know what is the problem is, that when I put in ELS express mode and press "G", the siren sounds and lights work ... Any suggestions? Edited January 22, 201412 yr by MakEurChoIcE