Instruction needed Remove Battery 308 GTSi?

front of the battery at the bottom is a bracket plate and a 10mm or 13mm nut don't recall at the moment.

 

Also, you may find it easier to remove and install the battery with a battery carry strap.

http://www.acehardware.com/sm-kd-battery-carrying-strap-kd-battery-carrying-strap-price-6--pi-1289651.html

It is pictured in the stored (folded) state. You put the metal loops through each post, and then lift it out.

Check your tool kit...I know my 78 308GTS did not come with one, but my 87 328GTS did.

 

There's an indentation at the bottom of the battery, forming a kind of "lip" at the bottom. There's a fixed bracket at the back that catches the back lip of the battery. In the front is a small plate that catches the front lip, held down by a 13mm nut. Make a note of the orientation of the front bracket plate -- it doesn't catch the battery right if you get it upside down.

Together, the two brackets hold the battery down at the bottom lip. It doesn't seem like enough to hold the battery, but it is.

You can do the whole job from above, but you'll probably want an extender for your 13mm socket, one of those long gripper things, and possibly a magnetic probe for retrieving anything you drop. (I found that putting the magnetic probe against the socket kept the 13mm nut in place so I could lower it onto the stud and get it started.) A mirror on an extending wand can be handy to check that the front bracket is aligned in the battery lip.

A battery strap is really the way to lift a battery in or out, once you get the bracket loose. 328s included a battery strap with the tool kit, but 308s apparently didn't. But they're cheap from most auto parts places.

The whole process is to remove the 13mm nut, remove the front bracket plate, then shift the battery forward slightly and lift straight out. Drop the new battery in, shift aft against the rear bracket, then lower the front bracket plate into position and lock down with the nut.

Attach the minus connection last, just in case you hit something with the metal wrench when tightening the plus cable -- if the ground isn't connected yet, the chassis isn't in the circuit.

 

on my qv I have a battery disconnect on the drivers side I would disconnect that first b4 doing anything elec,