Hi All, I am trying to fix my Alarm unit on my Ocy Scout, I've taken it apart and found a small leakage onto the PUB which doesn't look to have damaged the tracks, I'm in the process of checking out the batterys, unit number is 1K0951605C Bosch unit, so I then need to check if the batterys charge in the unit so does anybody have the pinouts for the 3 pins so I can power it up ? 

There is a comprehensive thread somewhere on here which describes the stripping, diagnosis and repair or an alarm unit - rather as you are now doing.  I'll try to find it but do have a look see.

 

Also, I've PM-ed you some more info which may be helpful.

 

If you can't get the info just check the connector pins and battery terminals with a meter, it should be easy enough to find positive/negative and whether the battery voltage increases when connected to the car/engine running.

 

I prefer repair rather than replace but you can buy a used item on the bay for less than £20 delivered, worth considering unless you really want to spend half as much on new cells or fancy a DIY modification with a cheaper battery solution.

Hi Micmac, this unit is second-hand from a golf as new ones are about £180 last time I looked, yeh  I'm into electronics, the PCB  looks OK so I'm hoping it's just the batterys that need replacing but just need to check that there's a charge there . I've found some details on it so will give it a check on the bench tomm.

Edited 5 January, 20224 yr by sparky2

Hi All, I cut open the (bosch) H12 siren and the NI-MH rechargeable batterys had leaked, fortunately after unsoldering the batterys and cleaning the PCB it had not damaged the copper tracks and a couple of new batterys from buyabattery £13.50 for 2 (3V150  140ma) fixed the unit.I cleaned the PCB then repainted, it soldered wires onto the batterys, sprayed it with silicon, refixed case back together with some Dow Corning 3145 sealant as its non corrosive (normal silicon corrodes metal) will see it I can put a guide together.