Here's an interesting issue I ran into.
Over the past few years, I've had a couple of LED failures in the 4 gauge cluster on the dash. The few times it has happened, it's been intermittent (e.g. it would blink, or go out and then come back on a few minutes later). I dismissed it as cheap Chinese **** LEDs, but it's rare to have a low voltage LED fail, especially intermittently.
Unfortunately, when one fails, you have to pull the entire dash apart to get to it. Total PITA.
As I was messing around with both gauge clusters, I noticed a couple of things, both dealing with the T5 twist lock sockets/bulb holders. The first thing I noticed was that some of them seemed a bit loose. The second can be seen (somewhat) in the picture below:
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On the left is a new socket fresh off the boat from the friendly folks at Amazon. The two on the right are a couple of the old sockets - the one in the middle is missing one of the tabs that makes contact with the bulbs, and the one on the right had tabs that were so close together they were almost touching until I tried pushing them apart with a small screwdriver.
Most of mine were like this, so I replaced them all. They aren't expensive, and the new ones fit WAY tighter on the circuit boards. This is what I ordered:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
So if you find one of your dash LEDs blinking randomly (which is incredibly distracting at night), don't automatically assume it is a problem with the LEDs.