Multiple Electrical Problems (Related?)

[nigeldrummond]

2000 Grand Cherokee Limited. Well cared for but electrics have become a cascading problem:

1. Left turn indicator no longer works.
All bulbs and fuses appear fine (all four lights flash with harzard on);
Right turn indicator works fine;
Replaced switch in wheel stalk but did not fix problem.
Any more ideas?

2. EVIC issues. The reset switch is not reliable (this was broken during a service by an over enthusiastic mechanic). I disassembled the unit and the switch probably costs 10c but have no idea where to buy them so wil have to buy a new EVIC unit BUT unit works fine otherwise except it is permanently in CALIBRATION mode and tells me that the temp sensor has a diverence of 8 degrees. Any ideas?

3. Memory Seat Buttons:
Pressing 1 no longer works, pressing 2 sometimes says "1 Selected" and sometimes "2 Selected". Pressing Set either does not work or says "2 selected". I assume I need to install a new switch unit but wanted to check if anyone else has solved this.

Thanks in advance for any help.