You can use the park switch on the wiper motor (if it has one), but that is only one position (usually prop hidden waiting to popup). Your best bet is to use relays and micro switches. Relay's are simple to use. Think of them as on/off switches controlled by power turning on/off. You have your power connections pins (AC or DC) and then you have your controlled connections NO / C / NC (C - is the Common connection say the ground wire from your power supply that you are using to power your...
Pale Night Productions has an amazing product called Perma-Blood that I highly recommend: http://www.palenightproductions.com/perma-blood/
Otherwise there's Rip City FX:http://www.ripcityfx.com/products_haunt-sauce.html
Or Fright Props offers there own recipe as well: http://www.frightprops.com/frightprops-blood-formula-0709.html
All of which would be suitable for a permanent, glossy, blood finish.