My new Becker HU has arrived via postie pat and after looking at the connectors + doing a little test I need to ask a question (or two! ) before I replace the standard "Concert" unit. My 8L seems to have a permanent 12V supply on terminal 7 of socket A (it doesn't have a switched supply) - do I need to swap this to terminal 4 of the same socket...... ......... if so, how do I get the bugger out?!! (is it something to do with the yellow tab? ) Thanks in advance.