Dodge Ram 1500, The Check Gauges Light Has Come On, Why?

This depends on what type of check light has come on and what year your truck was manufactured in as advances and changes in design have taken place over the years. Without any more information about where the check gauge light is this could be an alert for a number of things.

Your oil could be at a low level and it is telling you to get the levels topped up. On the other hand, it could also be trying to indicate that the radiator is becoming overheated and needs more coolant added to it. Have a look at other fluid levels too, including the brake fluid. If after checking your fluid levels you cannot see a problem it may be a problem with another part of the vehicle.

Make sure the gas cap has not become damaged or worn. It could also be on loose so make sure you tighten it up until you hear it click. Perhaps one of your battery cables could have become loose too. If you disconnect it and leave it for a few minutes, reconnect it again then.

If trying all the steps above and the light still remains turned on, you should take the car to a mechanic who will be able to locate the problem.

2002, the check gauges light came on and oil pressure gauge won't move, but there the right amount of oil in the truck why is the oil pressure gauge not moving?

You do not say what year your truck is, so, I would take pismos advice and check your fluid levels first.
If that is not the problem, then take your gas cap off and check to make sure it is in good condition, put the cap back on, making sure to tighten it until it clicks. Sometimes a loose or bad gas cap can cause a check engine light to come on, due to an uneven fuel/air mixture.
If the check light is still on after that, then you can try taking one of the battery cables loose, leave it disconnected for about five minutes. Then reconnect the cable. Sometimes this will reset the check light.
If the light comes back on, then take it to an auto parts store such as AutoZone, and have them to put the scanner tool on it to see what codes come up. They will tell you what the codes are for, and most will run the scan free of charge.
Then go from there. 
Check lights can come on for any number of reasons.   ♂

Vehicle Dodge Ram 1500, check gages light comes on and off.

I had a 99 dodge ram with check oil pressure light on and I was told to put a high flow oil pump in and thats what I did and my oil pressure light stopped

Check your fluids! Like the oil, the coolant in the radiator. Check gauges tells you to check what ever your vehicle gauges are programmed to alert you of.

I am having trouble with te temp switch, so te temp switch is not working,
I have a 99ram 15004x4 5.2

The check gauges light comes on cause one of this is not working right. Like if the alt. Gauge is not between 13.5 to 14.0 or you`er oil press. Is to low or if it`s over heating.

Gauge light is all it said I have 2002 dodge ram and mine check gauge light comes on and off

And it doesn't say at its for I look at the gauges and they look fine

#1 find out why it is on! Like; low oil,low coolant,low brake fluid.etc what year of truck can make all the differance. I am a mechanic since 60s, all car have basic principals,but can timely to correctly repair