I have finally got my RNS-E installed and fully coded up (I think). No errors coming up apart from the known issue of "ZF to ground".
Thanks to all for their help on this.
One final (well maybe) question.
I already had the MFSW and factory phone prep (no cradle just using bluetooth). I was expecting that when I pressed the MODE button on the MFSW to go into phone mode the RNS-E would automatically go to the phone menu screen. It doesn't. The RNS-E mutes and the number dialled is displayed on the DIS and dials OK, but the RNS-E stays on whatever screen it was on. If I manually switch to the PHONE menu on the RNS-E it displays the name and number being dialled, but doesn't automatically go to that screen.
Is this just how it works (and another reason for me to moan about the firmware!), or have I got some settings or coding wrong? I have coded the Telephone unit (77) as 0011422.