Well, how you fix them depends what's wrong with them. Check the fuses and bulbs first.
a relay does not control both dome light and the radio.
need location of fuse for dome and radio.
The circuits have nothing in common. The dome light works whether or not the key is on, the radio only works with the key on.
Check fuses
Blown fuse.
Usually under the Steering wheel there are fuses for the Radio and Dome Light. Check and make sure they aren't blown. The Dome light fuse controls Time/Clock, and sometimes stuff like Door Lock controls, Keyless Entry Systems, Dash Cluster Lights, and maybe even headlight controls.For the Radio there will be Radio No.1 and No.2 fuses check both of these.
The dome light or the lighter are two good ones.
Just fixed mine today. The dom light fuse in the engine fuse compartment was blown. The radio/power locks will go out as well if this fuse blows.
AnswerYes, they are on the same fuse, in the fusebox
there unfortunatly is no relay switch for the horn. It is on a fused circuit usaually with the dome light and beeper that sounds when the door is open and after you start the vehicle
The dome light switch on the dash is on.
20 amp it also handles the dome light and radio.