Recommend a decent Sat Nav?

[Lonewolf]

For Peejay.........
That's what I thought, but apparently it was draining the battery. As part of the sat nav wiring there is a little black box attached and this was deemed to be the cause of the problem, albeit draining slowly. On a daily basis you don't notice as the battery charges up under use but leave it a while, say 2 weeks, and it flattens.
Now the same wire is controlled by a switched circuit, problem sorted