My husband passed away this past December and his car sat in my driveway untouched. He kept his car in the greatest condition and made sure it had the proper maintenance, oil changes, new tires and rotations, etc. Since I didn't touch it all this time, I saw that the battery was dead and all that would turn on were the lights very dim. A gentleman asked me if I was interested in selling it and I told him that the car was in perfect condition; no problems except that the battery was dead. He brought a battery that didn't fit and then went to O'Reilly's and bought a new battery and told me that if it didn't fit or work that the store wouldn't take it back. What then happened is he connected the battery but did it backwards which caused a spark and then when he got it right the car wouldn't even turn on at all. No lights, clicking, nothing. He told me something was more than wrong then just the battery, but I know there wasn't. He then told me that he would still be willing to purchase the car and have it towed, but said he would buy it for 1/2 the asking price. Something didn't seem right.
Sorry for the lengthy post, but with all this information, my question is: did he damage the car by putting the battery in the wrong way the first time? Would that cause some kind of short with the electrical wires?
I've since tried to buy a new battery myself, but it doesn't react at all. Any advice or information would be greatly appreciated. If this helps the car is a 2005 Honda Civic and only has 167k miles.