Years ago I had a car that I installed the battery in the trunk. I installed one of these for safety http://www.hifisoundconnection.com/Shop/Control/Product/fp/vpid/1333043/vpcsid/0/SFV/30046 . I never had a problem with it of starting the car. That was years ago and I'm older now. Is this safe? It worked nice when I had to cut the power off to the car. I was thinking if anything happend to the wire feeding the started it would just trip. The breaker was mounted to the batt box then ran to the starter. Should I set it up again if I do a batt in the trunk?