RScottyL wrote:...I then connected the negative terminal first, then the positive!
Since the negative cable is grounded to the chassis, it is much safer to disconnect it from the battery first and connect it to the battery last.
This is important, so in case it isn't clear why:
If the negative terminal is connected while you are messing with the positive terminal, then if you accidentally touch your wrench to anything metal, your wrench will be shorting the battery and things will get exciting quickly.
On the other hand, if the negative cable is not connected, then there is nowhere you can short the positive terminal -- unless you drop your wrench across both terminals.
(Somewhat off topic, but once I accidentally dropped a wrench while working on my Jeep. Somehow it landed where it was shorting the starter solenoid, thus engaging the starter with the transmission in first gear. Luckily the parking brake was set, but it still was able to overcome this and slowly drive itself forward, partially crushing some stuff I had stored in front of it. The point being, stupid accidents happen, so don't rely on being lucky. I should have disconnected the battery first.)
2013 Pearl White SV, bought used in 2017 with only 5100 miles. Vancouver, WA.