No dash lights

If you have the maplight switch what colors are on the connector?

Brown and Yellow?

Map lights were done in 3 configurations so it is important to know which one you have.

It would seem you have a constant ground on the lamp. Pink is on one side of the bulb and is always Hot (+12v). The other side of the lamp should be brown if you have the switch. I would look for a a pinched wire on the brown side.

If there is no switch the other side of the map lamp should be yellow and ties in with the door switchs.

Start looking for shorts to ground on the Orange wires. Ash tray, dash, Console, Steering wheel if Auto Column, Heat/AC, Radio.

You did mention your radio light was on and it should not be if the fuse is bad and it is wired factory original.