i went to install led lights in my dash and i started and got through the tranny and t case lights and then did the heat insturment pannel and went to turn them on to check and they went on and then just shut off out of nowhere i dont know what to check first i checked the fuse and nothing

 

Maybe the LED lights burned out due to excessive voltage? Put some regular ones back in and see if they work.

 

I'd say you burned them out. Check with regular lights and if those work, either get stronger leds or see if you can wire in a resistor to lower the voltage.