I installed a new battery and when I connect the second (negative) battery cable the horn blares constantly and all electrical accessories are on i.e. parking lights, windshield wipers, interior fan etc. and keys and remote fobs have no effect; cannot turn off accessories/horn, cannot lock/unlock or start car. I've pulled the horn fuse (to work in quiet but cannot attach the negative battery cable without all the electrical things turning on.
Advice/recommendations wanted on why "electricity is flowing" when I attach the second battery cable and how to stop it and get control of the ignition/locks again with the keys/remotes.
Advice/recommendations wanted on why "electricity is flowing" when I attach the second battery cable and how to stop it and get control of the ignition/locks again with the keys/remotes.