Forums | Routemaster Association

Rob Mead
Oct 17th 2021, 16:15

Many thanx Colin .Sorry for my very very late reply.Someone told me that knowone uses the forum anymore so i didnt bother looking anymore after i didnt recieve a reply very quickly.Great to hear there is still somebody still useing it.Many thanx Regards Rob

David Colin 543
Mar 10th 2021, 23:57

Hello Rob
I do hope this isn't too late for an answer.

The immobiliser works in this way.

plug the shorting plug (starter bomb) in to the socket on the starter switch panel.
Latch in the bus, that is push in the Arens cable (AEC Engine) or turn the starter switch to on (later engine type buses). This switches the circuits on so the warning lights will illuminate or the flag raise depending on the charge state but prevents starting of the bus.
Then remove the shorting plug. This will allow the bus to then be started.
The idea is that the plug is needed to allow starting but cannot simply be left plugged in and defeat the idea of security.
If you want it taken out i can supply a different shorting plug that easily allows this. If you want it retained and working I can provide the spare parts needed and well as circuit details.

It isn't really that secure in as much as shorting the correct two of the three pins will allow starting but if you short the wrong pins it should set off the assault alarm as a warning.

My contact details are on the contact page

Best regards

David Colin

Routemaster Association
Mar 2nd 2021, 18:09

It is an immobiliser to the starter system.

Which bus is this on ? We might be able to find out if it has any particular system as fitted by the operator or garage.

Generally it is best to remove them as the units were fitted 20+ years ago and are no becoming unreliable.

Rob Mead
Feb 7th 2021, 21:59

Thanx for your answer but I’m still not clear what you mean by ‘this system.’Does it plug into a socket somewhere in the cab.I’m an Autoelectrician but new to Buses so need a bit more information on exactly how it works.Do any members use one.Please reply.Many thanx Rob

Routemaster Association
Feb 6th 2021, 18:28

The starter "bomb" works on vehicles fitted with this system and it effectively turns the system off to allow the vehicle to be started.

Rob Mead
Feb 5th 2021, 21:57

Hi there.Can someone explain how the starter bomb security plug works please and where does it fit.Assume it’s an Anti- theft device

Starter Bomb Security plug
Rob Mead Oct 17th 2021, 16:15	Many thanx Colin .Sorry for my very very late reply.Someone told me that knowone uses the forum anymore so i didnt bother looking anymore after i didnt recieve a reply very quickly.Great to hear there is still somebody still useing it.Many thanx Regards Rob
David Colin 543 Mar 10th 2021, 23:57	Hello Rob I do hope this isn't too late for an answer. The immobiliser works in this way. plug the shorting plug (starter bomb) in to the socket on the starter switch panel. Latch in the bus, that is push in the Arens cable (AEC Engine) or turn the starter switch to on (later engine type buses). This switches the circuits on so the warning lights will illuminate or the flag raise depending on the charge state but prevents starting of the bus. Then remove the shorting plug. This will allow the bus to then be started. The idea is that the plug is needed to allow starting but cannot simply be left plugged in and defeat the idea of security. If you want it taken out i can supply a different shorting plug that easily allows this. If you want it retained and working I can provide the spare parts needed and well as circuit details. It isn't really that secure in as much as shorting the correct two of the three pins will allow starting but if you short the wrong pins it should set off the assault alarm as a warning. My contact details are on the contact page Best regards David Colin
Routemaster Association Mar 2nd 2021, 18:09	It is an immobiliser to the starter system. Which bus is this on ? We might be able to find out if it has any particular system as fitted by the operator or garage. Generally it is best to remove them as the units were fitted 20+ years ago and are no becoming unreliable.
Rob Mead Feb 7th 2021, 21:59	Thanx for your answer but I’m still not clear what you mean by ‘this system.’Does it plug into a socket somewhere in the cab.I’m an Autoelectrician but new to Buses so need a bit more information on exactly how it works.Do any members use one.Please reply.Many thanx Rob
Routemaster Association Feb 6th 2021, 18:28	The starter "bomb" works on vehicles fitted with this system and it effectively turns the system off to allow the vehicle to be started.
Rob Mead Feb 5th 2021, 21:57	Hi there.Can someone explain how the starter bomb security plug works please and where does it fit.Assume it’s an Anti- theft device

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