Does anyone have one of these Hella 5aa 003 525-00 Alarms fitted to their car or know anything about how they work?

I have looked on Wiki and checked a couple of manuals but I cannot find any information on them or what they do?

If anyone has one and any advice on how to check it I would be most grateful

Morning Paul

Wow that stirs the old grey matter

I take it your familiar with www.realoem.com check the Classic section or BMW have a Classic section try their Customer services (I am told they can be slow)

If I recall alarms were not a standard fitting back then so you may find Baur fitted it when they retrimmed the car

Maybe a question to Baur in Stuttgart I am sure they will have an Archive

Good Luck

Dave

I agree with Dave, back in the day most alarms were retrofit and Hella being an independent company supplying electrical relays and associated switches to fit to Baur and other styling houses of the era.
I would be tempted to track the wires individually to see where they go to - I would imagine one or two would go to the starter motor and ignition switch / coil, etc

Let us know how you get on with it all

5 hours ago, Greydog said:

Morning Paul

Wow that stirs the old grey matter

I take it your familiar with www.realoem.com check the Classic section or BMW have a Classic section try their Customer services (I am told they can be slow)

If I recall alarms were not a standard fitting back then so you may find Baur fitted it when they retrimmed the car

Maybe a question to Baur in Stuttgart I am sure they will have an Archive

Good Luck

Dave

Thanks Dave I will recheck my realoem and the classics section just in case I missed something

3 hours ago, BOC Admin said:

I agree with Dave, back in the day most alarms were retrofit and Hella being an independent company supplying electrical relays and associated switches to fit to Baur and other styling houses of the era.
I would be tempted to track the wires individually to see where they go to - I would imagine one or two would go to the starter motor and ignition switch / coil, etc

Let us know how you get on with it all

I will do an update if I find anything

Hi everyone and Happy New Year.

After did some further investigation I have managed to find some further information regarding the alarm.

Turns out that the Hella Alarm was sold as an aftermarket product in a lot of motor accessory shops as well as being offered and fitted by some BMW dealerships.

By chance I found someone selling one on Ebay Australia and I contacted them twice!! to ask if they would be willing to sell me a copy of the wiring diagram which I was happy to pay them for but sadly they never responded.

I have attached a couple of photos so you can see what the item looked like.

In the meantime I have been tracing the wires to see where they go and this is what I have got so far.

Hn 1 x Brown wire to horn

Hn 1 x Brown wire to horn

3 x pairs of Brown with Yellow Stripe could be lights and doors, bonnet and boot locks T+ and T - .

2 x Brown wires to MK (Master Key)?

1 x Brown with White Stripe S?

1 x Solid Red wire (30 or 31) goes into a loom maybe onto starter or battery but nothing direct to battery lead that I can see. Also nothing going to coil.

Also checked an on/off switch located in the glovebox which I thought maybe the alarm arming operation turned out to be just for the light and a spare feed.

I need to do more tracing and check around the ignition switch just in case there is something there

The main reason for me doing this is because i read somewhere that these alarms can allow the car to start and then cut out the engine to prevent them from being stolen?

Whether this is true or not I have no idea I just want my car to run again without cutting out!!