the contact is probably stuck in the button in the steering wheel. Unplug the horn in front of the grill. Now you can reconnect the battery cable. the cover comes off most vehicles pretty easy. the contacts should be under that.
No it wouldn't unless you hooked it up A$$ backwards. You should only charge from the battery. If you are not going to be running your rig unhook the battery. Check your starter and map sensor or you Crank sensor. In that order.
Why do you want to unhook your battery??? If the alternator is good the car will continue to run, if it dies then you have a bad alternator this is why you would want to unhook the battery cable to check and see if you have a bad alternator
Bad electronic resistor / blower module - replace.
Unless you have a short-circuit somewhere the battery is u/s
The engine computer has "lost" its idle memory. You need to unhook the battery for 5 minutes. That should reset it, and upon start up it should relearn idle positions.
you can always unhook 1 side of your battery when you turn the car off and move the part you unhook to the other side of the battery then you will have to hook it back up when you get ready to leave...............or and easy way would take it to the shop that specializes in batteries
If the horn is activated by a relay, that would be my first suspect.
A dead battery would not cause an engine to seize
12v battery every car battery is the same unless you get a 16volt, unless your running a ton of electronics equipment i would stick with the 12
Dead cell in battery, replace it.
No it cannot unless alternator is not charging the only power a diesel requires is for fuel cutoff solenoid
because you may have either a sol. pack going bad or you could have a problem with your ecm "brain" which when you unhook your battery it resets the brain and attached elrectronics.