I have an older Schumacher charger with multiple connections with external mechanical contacts. One of the techs ( Rick Pite) took the necessary time to look into my chargers wiring diagram and called me so that I would connect the wires to the new timer correctly. This is a good company and I will definitely keep them in mind when I need to purchase anything related to batteries.
I just called Tom and told him that I just received the replacement meter. The first shipment via FEDEX never received. If I ever receive it I will let you know.
I looked all over for years until I ran across PLP doing a search by the manufacturer part number. This switch was a perfect replacement for my 30 year old Mac charger. With some slight modifications, it works flawlessly! The instructions and wiring diagrams explained everything very clearly and it was easy to follow.