I was proceeding to put the k & n cold air intake on my 86 mazda rx7, i went to take off the negative battery cable and theb wrench slipped and and i hit the wrench while it was on the negative and touched to positive it sparked. Then i left it off and fitted the car with the intake. Then i went to reconnect the battery cable and nothing at all no lights no rotating nothing, then i jumped it and it started right up, but when the jumper cable was disconnected the car still ran then i went to put my lights on and the car turned off. Then i heard a popping under the hood so i looked and it was coming from the headlight relay. The only way to stop it was to take off the battery. I have a replacemnet headlight relay so i am going to replace it then get my battery checked but do you have any info please help. Is it possible i just blew the cvells on the battery?

 

buy a new battery

 

You should check your fuses to see if anything blew, and definitly replace the battery.

 

well if your car ran at all that means the main fuse didnt blow if im not mistaken, iv blown mine one to manny times jumping my car saddly to say and i hate replacing that 80amp main

 

Hey Thanks you guys i changed my battery, my cables, and my connecters. That battery was shot, Thanks to you all for your help! Get a K & N cold air intake they do a big difference