There's some idiot stealing similar cars to mine -- mid to late 90s Subarus -- in this part of town. The police are pretty confident that he has a jiggle key (the cars have been mostly recovered, dumped but unharmed; apparently he's just using them to drive around for a while).
I'd like to do something that will make my car annoying enough to start that if he picks it out, he'll likely give up in a few minutes. A poor man's starter interrupt, in other words. Something I can disconnect when I park and then reconnect when I'm ready to go again. I'm looking into it for the future, but at the moment, I'm not going to buy and install any relays, or a real SIS system.
I don't mind spending a couple of minutes each trip with a wrench if I have to. I'd really rather not disconnect the battery and reset my ECU every time (plus that's a bit obvious). I'd also rather not pull the fuel pump fuse or relay, because that seems like a recipe for coming back to a dead battery should the car be targeted.
This is a manual transmission -- hydraulic clutch -- and I've been trying to come up with something sneaky that would prevent it from disengaging, or more likely using the clutch interlock switch.
I have an electronic ignition, not a distributor, so as far as I know moving those wires around won't prevent starting, just screw up my engine.
Is there a good option for non-obviously disabling the car that I've missed here?