tbowker
Full Access Member
You must be registered for see images attach
Mystery solved. The one on the left is what was in my zf5, the other is what rock auto said was for a four speed. One of them has an OD that's .001" larger than the other when measured at the threads, both have a 1.5 metric thread pitch. The original still worked but I changed it out anyway since I bought a new one. The plug was obviously the culprit. It's nice to have reverse lights.