My '76 it was fitted to the bulkhead (firewall), driver's side above right knee (the contacts on the other side were actually in the tool tray!). On my '93 it is more or less central on the wood bulkhead behind the seats.
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly '11 MINI Countryman Cooper D All4 '90 LR 90 SW