Brian Gaff wrote

20000 v on them when parked?

Likely to end with keyed body panels very quickly indeed.
Much more expensive to fix than a new cat converter.

"John" wrote in message
2.236...
My daughter had hers stolen back in March and a good friend has just had
his stolen.
Some locks are available but they assume the toe-rag is going to unbolt
them and not brutally attack the exhaust.

Any ideas for making them tamper-proof - ideally with potential to cause
injury to the scroats?