Dodgy electric mirrors

[DoctorBonzo]

Recently purchased my first TVR - love it
It had tempremental electric mirrors on it when purchased but I am told that this is a simple change of the relay in the drivers door and easy to fix.
Anyone done this - how difficult is it? Should I pay someone to do it or try it myself?
Also similar query re: non-functioning cabin fans. Heat works but no blower. I'm told its a wire which has corroded/over-heated and needs re-soldering. Easy?
Any tips much appreciated

[spend]

DoctorBonzo said:

It had temperamental electric mirrors on it when purchased but I am told that this is a simple change of the relay in the drivers door and easy to fix.

Thats a quantum leap of faith IMHO?
Could be any number of things, the relay being the worst thing to access IME. It's do-able but maybe not a best first stab at delving into the dark deep recesses of the doors Patience & acceptance of learning curve should overcome difficulties

[Zippee]

It's the mirror switch in the drivers door.

[S7Paul]

What are the symptoms? Several times I've got into my car to find both mirrors angled downwards and needing re-adjusting. I know no-one's been tampering, as the car was in the garage, so it must be an electrical problem.

[Cider Andy]

How old is the car? Early cars had a wirewound resistor to control fan speed and relays to control the mirrors. Later cars had an ECU to control each function.

It's not to say the fault lies in the distinctly different parts but it's better to know the set-up to effectively diagnose the problem.

Easiest way to tell which system you have is if the control buttons/switches are brushed aluminium: that would tend to indicate the later ECU-based set-up (applies to both mirrors and heater fan).