I have a 99 dodge ram quad cab 4x4. Lately when driving I hear a clicking under the dash , sounds like EXACTLY like a relay opening and closing. I can not pinpoint what makes the sound happen it seems to be random ? Any ideas guys ???




Could it be the trailer brake controller?

 

Squirrel eating Doritos above your heater core. I swear to god thats what it is

 

Could be but the squirrel is on the passenger side this sounds to be near the drivers feet

 

Maybe he is hanging on the column shaft. Do some evasive turns. That'll teach 'em.

 

Could be the CTM.
It's a black plastic box above the gas pedal that is something like 4" x 8" x 1.5".
Any starting/running issues?

 

Now that you said the CTM (Central Timer Module), I figured out what might be wrong with your wipers.

 

Who's wipers? Mine work great.

 

The OP's. He has another thread about his wipers will not work on high. The CTM controls the delay and speed of the wipers.

 

Oh. Yeah, it controls just a couple things.