Outer Limits 4x4 Board

Hi there, anyone know where i might be able to get hold of a lockable manual in line kill switch. I own heavy machinery which is often left on-site, people like to skrewdriver the ignitions and borrow the equipment. I have heard of these lockable kill switches where you have a kill switch inside a stell lockable outer casing and is installed in-line of the positive lead from the battery.
Any help much appreciated
Cheers

Most switches are setup on the negative lead to the battery, which will have the exact same effect as cutting off the positive lead, ie wont start.
Most trucks and machinery come with a built in switch, but if not you can buy them from any truck accessory shop, then its a simple job of wiring it in with heavy duty cabling, and making yourself a security box to house it in.
Some models come with a removable handle on the switch, which would stop joyriders but any idiot with a similar handle can just come along and turn it on again.

You can also buy relay style switches, which basically are as they say, a massive relay that does the same job as the switch mentioned above, except its switched electrically instead of physically. You could hide it in the chassis somewhere then have the on/off switch hidden in cab or turned on/off by a codepad/electronic keyswitch, etc...

Cheers PJ, i like the code pad idea as the other problem we have is that builder sometimes need to move the machinery when we not there, and as every one knows that we hide keys they just go looking for them, codes can be changed regularly when too many people know what the code is. My only concern would be reliability of code pad and relay.

Thanks again

The relays will last you a long time as long as they are not constantly submerged in dirt and water. As for the keypad, you can go from a cheap Jaycar kit, up to a professional security system codepad.
Another advantage is it would be a custom system, so a lot harder to get around, although as the saying goes, if they really want it, they will get it.

being heavy machinery, there should be some kind of hole to sercure a padlock through to lock the battery isolator to off, then allow the builder to have a set of keys and yourself, then the pad lock has to be cut to allow the iso to more, alot of machines have the isolators under a lockable door or panel.