Which Terminal Do You Disconnect First On A Battery. Disconnect the positive terminal. Open car hood and locate batter.
Click to see full answer. Answer 1 of 5. The size of the socket may vary by vehicle American cars will usually need a ½ 516 or 38 wrench while common sizes for imports are 10 and 12 mm.
Doing so will create a short since the negative terminal is grounded to the frame and fuses will pop tools can melt and the battery could explode.
Subsequently question is what happens when you disconnect the negative battery cable. When you connect the battery connect the positive end first. The cable was cut because we were unable to access either terminal to disconnect them. Ground one off first and on last for safety against shorting.
