more info
what year is your car.?..or is it a 30 amp or 20 amp fuse ...
what are you calling left ...from inside the car ? or under the hood
not sure what black box ...driverside is left ..anyway you look at it ..
if it is a 30 amp fuse ...does it blow with key off .. or once it is on ?
...it's a hot wire at all times ..but it is power to the eec relay..and short could happen on the other side of the relay once key is turned on ... in the IRCM ..which is on the right hand side [passenger side] mounted on the rad support ..inside.. right by the fender ...
if it's a 20 amp fuse.. it's going to be a different story ..the ecc relay is a little different ..I'll wait before getting you confused...dave