I actually googled it and went off of 3 or 4 diffrent articles just to make sure they were all making them the same way then i went to radioshack and bought the resistors and stuff for like $10 and took my o2's and cut the wires in the middle, put in the mil's and soldered them up. I plugged them into my car and they didnt work cause i drove around with bad o2's and didnt know. So when i buy my new o2's i'm pretty sure it will work.