I have a 2007 honda ridgeline. When my head

The flasher relay is most likely to be the fault, check that all indicator bulbs are good as a blown bulb can cause irregular flashing pattern

http://www.ridgelineownersclub.com/forums/71-problems-issues/38413-turn-signals-hazard-lights-not-working.html#/topics/38413?_k=qjgisg&nocache=1472342996315

there are two fuses as per the discussion in the above link if you scroll down you will see a diagram of the underhood fuse box with the location of the flasher.

Make sure the headlights are turned off.
Check that the dome light switch is turned off.

Take it to your local Honda Dealership. The radio will have to be removed and sent out to be repaired.

One of the frame grounds on the headlight wiring harness is loosing connection with the body. Look for black wires attached to the body under the hook. One of them is loosing connection.

I am having the exact same issue with my 2007 Honda Ridgeline right now...did you ever find the solution?

Hello: Check the complete Connector (truck side) for excessive corrosion this is a common problem in areas where a solution is used on winter roads. It can be so bad the complete connector end may have to be replaced.

The lights for the radio are IN the radio, they are led back lights. However they are wired through he harness for the bcm so they react to day and night ambient light