Just bought a 2000 Pontiac Montana that had a bad battery. I'm trying to hook up a new battery but the horn honks and the fans come on when trying to hook up the second battery cable. Any suggestions?
Before getting the new battery we removed speakers and their auxiliary batteries that the
previous owner had installed behind the rear bench seat. The additional cables that had
been connected to the positive battery cable were also removed along with the aftermarket
sound system controller that took the place of the standard Pontiac sound system. We
currently do not have a sound system installed.