Hello I replaced my stock lights with leds now the first part of the mph does not light tried different bulbs .even put stock bulbs back in no luck any suggestions thanks

 

What year Ranger?

Assuming 2003 and older
The cluster bulbs, 6 of them, are powered separately in groups of 3, so 2 separate 12volt wires, on 2 separate connectors, but both are powered from Dimmer wheel

If just one bulb doesn't work then problem is in the clusters circuit board