I agree with k12fixer I downloader the MOT spec and it states
"Direction indicator ‘tell tales’may be audible or visual.
the Spec does not ask for both so if the audible one is working it should be a pass in my opinion!
On the the hazard tell tale the spec does ask for a light and if one tell tale light is working as is normally the case then I believe it has met the requirements
However reading all the posts about this common fault and the fact it appeared to cost a few £hundreds to get a new dial unit I was ready to have a battle with the MOT tester. Then I had an epiphany, I thought lets see if I can have a go at fixing it. (Spurred on by the problems of compatibility and the new milage display issues with fitting a whole new dial unit seen in other posts)
My micra is a 53 plate K12 (my daughter's low insurance run around and to be honest I thought my days of fixing cars had gone but my teenagers changed that mis conception
)
Reading the posts most people have a problem with the left dash indicator aka tell tale dash light (usually at MOT time) therefore I was reasonably sure it would be a circuit fault rather than just a bulb (if a bulb fault was the root cause then my guess is you would have mix of posts - 50/50 right and left).
I took the dash apart (actually not too tricky and didnt take long with haynes manual) and the bulb was fine so it was the circuit that was dead as suspected. So what next ?- further take the dial unit apart and try to trace for a broken circuit or component - that may be possible but I was not up for it. So I had a John Wayne/ Clint Eastwood Idea: - the actual external left indicator still works all I need to do was get this signal to the dash and bingo. - The automotive engineers among you please dont judge this isnt going to be pretty
So I removed the indicator light from the side of the front wing (simple to lever this out) and it exposed 2 wires - I then used those "tap in" connectors (the ones you squash with pliers) to run 2 new wires back that effectively would allow me to put a new bulb in parallel behind the dash. The route of these wires was in through a hole in the wing into the engine compartment then in through a grommet used for existing wiring in the bulk head and hey presto you are virtually at the back of the dash - you can easily see it all when you have taken the dash to bits (really its not too tricky). (I used a bit of stiff garden wire to act like a needle with the electrical wire temporarily attached to it to thread it through these tight spaces)
Then solder your existing bulb from the dash board that is probably still working (with 2 bulb terminals exposed) to the end of these 2 wires - you could get a different bulb if needed. Note - You
cant then put this modified original bulb back in the original hole as you would now get a short and damage your dash circuits
unless you insulate the bulb so that it does not contact the dash circuits/electronics. I did this simply with some electrical tape at the side of the hole in the dash (covering the copper tracks) and further modified how the bulb went into the hole so that it nicely located but did not make contact with the copper tracks around the edge of the hole in the circuit board. I am sure there must be other ways of lodging the bulb in place given a bit of time and effort.
My 2 wires were simple bell wire so enough resistance to limit current flow and I also put an in line fuse in place in the positive wire just in case and used electrical tape to secure the wiring to existing looms (yeehaa
) Disconnect battery for safety before starting any of this work
Finally test that the bulb works then re-assemble the dash board - all sorted and only took me about an hour even with a few mistakes - the next day it passed like a dream without a fight or a big bill
No guarantees but I hope this helps someone and saves the expense of a new unit - this is pay back for all the hints and tips I have relied on over the years on this and other forums
This MOT failure was a result of taking the car to a council garage that now offers MOTs to the public - big mistake - despite the dream that they would be impartial and not trying to upsell lots of repair work - as soon as it failed on a combination of minor/debateable issues they quickly quoted for the repair work
Next time its back to a trustworthy garage that has a sensible relationship with the MOT test station