well since it works on 1 - 2 - 4
it means fan's power and earth are okay
i suspect resistor pack plug failure (not the resistor pack itself)
or the switch (which is rare vs plugs melting tbh)
Try the firm wack approach
i hit the lower side of the passenger dashboard near the center console - if fan comes to life - its likely to be the plug on the resistor
If you wack the switch while on 3 - it comes to life, its more likely to be the switch
Ziggy
Nice on guys, a quick fondle of the connector under the glove box and we're fully operational
Hopefully it'll be dry later so I can give the light a looking to.
Thanks again
Neil