Thanks for the reply. Problem now sorted

. Got me multi-meter out and checked the curcuit board inside the unit. Couln't find a live anywhere on the board. So I powered directly to the motor and that worked ok

. Next I dug out an old curcuit board off an old Renault Megane electric ariel and wired that into the Mazda unit. Yep that's wright it worked first time

. Up and down. Soldered all the wires together as appropriate and mounted the new cucuit board on the Mazda unit. Fitted to the car and every thing now great. Radio on arieal up Cd player on ariel down etc, etc. so saved myself about £100 with a litlle messing about on the new Mazda Price.
