problem i have with my 7th gen rolla is the plug on the engine/emission harness side was messed up when i got the car. i went to the junkyard and grabbed a new plug and some wiring from another corolla including the new plug. i am talking about the o2 sensor on the exhaust manifold near the front of the car. it has 2 wires and 1 of them is hollow it seems for air i am guessing, not 100% sure. the problem I am having is how can i splice this together with my existing wire? since the wire is hollow how should i join them together in order to make it work correctly??
its kind of hard to explain but the plug has a brown and grey wire that runs to the engine and that part was messed up so i had to get a new one and i want to join them together now.