i just installed an eletric fan and that is when it started, but during the day at like 90 degrees it stays at running temp so that is where i am stumped I can turn my lights off and watch the gauge drop. But at idle with the lights on the gauge reads normal running temp.
Okay, waitaminute. You had to have meant "But at idle with the lights
on off the gauge reads normal running temp", right?
When, exactly, does the temp appear to go up? When you're DRIVING at night with the lights on? Under 20mph? Over 20mph? When you lit it idle at night with the lights on? During the day if you turn the lights on?
Either your engine really is heating up, or it's just the gauge giving false readings. Either is plausible, but you're not giving us enough to go on.
If your headlights have enough draw to slow down your newly-installed fan, this would most likely result in the temp rising while you're sitting still with the lights on (idling, stopped at a light, etc.), since you may have insufficient airflow through the radiator. If you're moving at, say 25mph, you should get good airflow through the radiator
whether your fan is spinning or not.
Did you removed the mechanical fan?