Hi
Anyone know the best place to find a wiring diagram for a 1990 rover mini I have some gremlins that need chasing thanks
The blue "Haynes Manual for 1969 to 2001 (up to X registration)" edition would be a good place to start. Attached is what should be the appropriate diagram and key from that manual covering your car.
Mini Mania also has a bunch of wiring diagrams. It can be useful to have access to various years/models when an older mini has some newer mini features like an alternator, etc..
https://www.minimania.com/Mini___Cooper_Wiring_Diagrams_On_Line
I found these links on TMF useful for wiring.
https://www.theminiforum.co.uk/forums/topic/324929-wire-diagrams-redrawn/ (https://www.theminiforum.co.uk/forums/topic/324929-wire-diagrams-redrawn/)