Opel Corsa 96 'Lights On' Alarm

[EamonX1]

I drive an Opel Corsa made 1996. Recently the Alarm, which goes off if lights are left on inadvertently, has ceased to work. I assume the activating switch is operated by opening the car door. The most likely thing - after checking fuses or alarm unit - is that the switch is dirty. Where exactly is the switch located? Where can I get a free download of a service manual?

[EamonX1]

Originally Posted by EamonX1

I drive an Opel Corsa made 1996. Recently the Alarm, which goes off if lights are left on inadvertently, has ceased to work. I assume the activating switch is operated by opening the car door. The most likely thing - after checking fuses or alarm unit - is that the switch is dirty. Where exactly is the switch located? Where can I get a free download of a service manual?

Since posting above I have been told that the problem probably relates to the relay governing this alarm. I have located six relays new the fuse box. Is there any simple way of testing these, using volt/resistence meter, or otherwise?

[EamonX1]

Originally Posted by EamonX1

Since posting above I have been told that the problem probably relates to the relay governing this alarm. I have located six relays new the fuse box. Is there any simple way of testing these, using volt/resistence meter, or otherwise?

I have discovered definitely that the problem is the relay. I have located the relay in question (it is relay GM 90464777) - grey in colour with grill through which alarm isupposed to sounds. Currently when I leave lights on and open door I hear the alarm attempting (but failing) to sound. I will get replacement.