Not known for my patience I swapped out the GROM aux unit for the GROM BT3. Got a bit bored with unplugging and plugging in wires every time. Only had to change the unit as the harness is the same. Then positioned and ran the microphone cable for calls. Top job even though I say so myself
In other news, did 125 mile round trip to York yesterday. Steady motorway (M1) and dual carriageway (A64), sat nav indicating 70mph, 29mpg and no warning lights! I think my perseverance with V-Power is paying off. And I don't think 29mpg is bad for the old girl.