Okay, I have two monitors that have 12v cig. adaptors on them. I cut the the adaptor parts off and now i have to wire ends, but both the wires are black. The one wire has some writing on it, but does not say whether its power or ground. Should I add a fuse to each wire coming from the monitor then test it? And, if the fuses blow just reverse the wires?
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who makes the monitor? I would contact them to find out.
Got a meter? Plug in the cigarette adapter and test what's left of the wires.
^^^
Yep.
If it reads a negative value then the power/ground needs to be switched.
-Seth
Are you sure it'll work detached from the cig lighter? Maybe the lighter plug dropped down the voltage or something. Shoulda just wired in 2 females under the dash and connected them.
