Texram Immobiliser

If it is the type of LED which flashes on and off every second or so it will run down the battery in that sort of time. It's better to use a low current 7555 timer chip to flash an LED every 10 seconds or so which reduces the current consumption to near zero (about 2 mA average).

Derek Geldard explained on 18/04/2008 :

Nothing too difficult about removing an after-market alarm/ immobiliser.

There are only a mix of two basic configurations for the connections...

1. Some will be parallel connections, where an existing loom wire is simply tapped onto.
2. The others will be series connections, where an existing loom wire is cut to allow the unit to break a feed.

Start with pen, paper and disconnect the battery. Follow each wire from the unit to the loom connection and make lots of notes as you simply remove items 1. Then move on to items of type 2, except this time the original loom wires where they have been cut need to be rejoined. Make careful notes of wire colours of both loom and the unit, where ever they are connected together. There will likely be no more than one or two of the type 2 in the system, but it is crucial to find these and repair the cut loom wires.

Where the existing loom needs to be rejoined, the joints need to be good ones. My preferred method is to strip both ends, splice and tin the splice with solder, before covering with tape. A chocolate block

5amp connect can be used as a temporary joint, just to confirm your attempts at removal have worked.

Your notes should be good enough to allow you to put everything back, should it all go wrong.

I'm assuming he has two separate faults here?

Chris