Probably most of us have done this at least once. In recent years I've always had the leads labelled so unless I pull them off the cap I'm ok. Regards Weslake-Monza 1330 In a message dated 09/06/2011 03:37:36 GMT Daylight Time, 72spridget at gmail.com writes: Sure enough, somehow I swapped 2 and 4 of all strange things.