hi, I have a mk1 2002 octavia. third/high level  brake ligh problem. some of the bulbs went and the rest are dim and blackened. what type of bulb are they. they are tiny. capless ones. i ordered some off amazon, but they where too big. 

Is your car a hatch or estate?.

 

its a hatchback

12 hours ago, andy187781 said:

its a hatchback

ISTR that's a multi-LED unit, and not user-serviceable.

13 hours ago, andy187781 said:

hi, I have a mk1 2002 octavia. third/high level  brake ligh problem. some of the bulbs went and the rest are dim and blackened. what type of bulb are they. they are tiny. capless ones. i ordered some off amazon, but they where too big. 

If you have taken it apart and seen the bulbs blown, then these will fit. 
https://www.ebay.co.uk/itm/10-x-286-DASHBOARD-SMALL-CAPLESS-WEDGE-12V-1-2W-DASH-PANEL-LIGHT-BULBS/280896589943?hash=item4166bdd077:g:IRwAAOSwoudW4rRh

I've installed led lights into the unit now. They where all quite bad connection too so I've soldered each one in 

I have replaced a few in mine too.  Didnt need to solder though

I did mine last year, wouldn’t solder nor use led, be far to bright for what’s needed.

I thought the same before I did it..They're not that bright  though..And don't stand out..