they all look as though they should light, but not all of mine do.
starting on the left, is a turn signal (I don't have that), next is a seat belt indicator. Doesn't light on my machine whether it is attached or not. Battery, lights when you turn the key, brake, is suppose to light (I hope never to see it). Head lights does not turn on whether they are on or not. Gas pump, no light, next two are coolant and oil and I assume they would light if there was a problem. PTO indicator, not available on my machine. 4 wheel drive indicator, lights when 4 wheel drive is engaged. Flashers not available on my machine. Parking break, lights when parking break engages, engine light, lights when first starting. Glow plug lights when held in glow plug position. Right turn signal not available on my machine.
Interestingly most equipment I have ever dealt with all indicators light in either a test mode or when you initial start the machine. That way you know whether a bulb is blown.