here is my take on theft prevention, if someone wants the truck bad enough there is NO WAY you can stop them. you can cause them to decide it isn't worth the effort ... i.e. fuel shut off.
so, vacuum, electrical, fuel all work to frustrate. what i was told, and it makes sense, is to allow the vehicle to crank over, maybe even move down the road for a block or two, then die. the thief will get nervous and run leaving the truck behind.
I agree. If it cranks over but won't start it's likely they will leave it.










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