Alex, I just bought brand new Beru wires and they shocked me and my wrench the first month I had 'em. Best way is to rebuild the stock shielded ones and reuse them. Usually, the connectors go bad and can be replaced. I just went back to my stock ones with new connectors. Funny, since I cant return the Beru's (I dont think), I used the connectors off of them to replace the ones on my old wires. Now I have a whole set of connectors and seals for my old wires