I can tell you this, turning your lights on WON'T cause your engine to overheat. Ignore the gauge problem for now. Check to make sure you have sufficient coolant in the radiator and the reservoir. How do you know it overheats? What are the symptoms? Is it steaming or spilling coolant? Does it do this while idling for a long time or while you're driving around? If you have enough coolant, and it does it while you're driving, it could be the fan clutch. The fan can still be spinning and the engine could still overheat because it may not spin fast enough. Or it could be the front lower air dam (or air diverter). That is the lower black plastic thing on the very bottom side of the front bumper cover. It's the thing most people end up scraping while parking too close to a parking block. If that is missing or bent up, then you can easily overheat while driving. If you are overheating while sitting idle, then it could be.. again, a bad fan clutch. Or it may be that the engine is running way too lean or way too advanced in timing. Last but not least, a blown head gasket. But lets rule out other possibilities first.
I realize that there is overheating when the car loses power and there is blue smoke, last week the indicator reached the upper limit and the car did not want to move forward, it's like when you no longer have gas, waited an hour to lower the temperature, and after the car ran.
Have enough antifreeze and the loss is minimal.
When I go on the highway the temperature is maintained at half the rate, but at idle the temperature begins to rise and it does not drop until the car is on the highway.
a month ago the timing was 14 degrees and put it at 10 degrees, I think from there I have noticed an increase in temperature.
is probably the fan clutch as you said, is there any way to make a test, all I did is to see if it turns at idle and accelerating the car and apparently looks good.