Am I Supposed to See 12V at the Tail Lights?
Re our Coachmen Freedom Express 192RBS: I have a verified measurement of only 10.39V at my left rear tail light. I am producing 13.9V from my 7-pin connector on our Ridgeline at the tail light term...
Forum Discussion
If you are using a digital voltmeter and no bulb in the socket your voltage measurements may be useless. Sorry for the bad news.
Without a load (bulb), in the circuit you cannot determine if you have a bad ground side. Yes the input voltage is a bit low but if it goes even lower with a bulb in place that is an issue too. Not sure why you have a green/ground and a white/ground wire. Is this a dual filament circuit? Be absolutely sure you are using the same bulb as in the side that is working.
A digital voltmeter can read full scale and not have enough power to run a bulb once installed. I like to use a cheap 12 volt test light as a quick backup. It is a simple go, no go device and visual.
Without a load (bulb), in the circuit you cannot determine if you have a bad ground side. Yes the input voltage is a bit low but if it goes even lower with a bulb in place that is an issue too. Not sure why you have a green/ground and a white/ground wire. Is this a dual filament circuit? Be absolutely sure you are using the same bulb as in the side that is working.
A digital voltmeter can read full scale and not have enough power to run a bulb once installed. I like to use a cheap 12 volt test light as a quick backup. It is a simple go, no go device and visual.
