Why aren't you meant to have your ignition leads near the wiring loom going to the CAS??

Because they carry an extremely high voltage, the effects of which can interfere with the wiring loom. Another thing no one has mentioned yet, is that the CAS will die if it gets damp inside.

But it's insulated... I don't understand how it could affect it Maybe it's the magnetic field produced by the current Some original photos have not been recovered yet.

Exactly! Totally unrelated, but a guy i worked with got a 'boot' off a cable that was not connected to anything. It was lying in a cable tray beside another cable which was running a large motor. The current running through this cable was large enough to induce a large voltage (but bugger all current) in the disconnected cable and give my mate a hefty shock. Moral of the story is high voltage/current can easily induce noise into the CAS signal wires and blow the guts out of them if the CAS cable is not shielded and earthed.

damn beat me to it! your not a sparky by any chance are you MonstaS4? VL|B0GaN, google for "induction" also, if you have to spend $130 on a CAS kit every 2 years then thats just one of the perks of owning a VL Some original photos have not been recovered yet.