https://www.crossfireforum.org/forum...cord-fail.html

I'm guessing this 12.4V from the above post is a different voltage than the one that snazzy little cigarette lighter monitor you pointed us to should be giving out.
I got the cig lighter unit on Monday and plugged her in for the first time and she's reading 12.4V with only the ignition on - no engine.
I dont know how old my battery is tho - I only bought the vehicle 8months ago.