Replaced the old broken converter with a "WFCO WFCO-8712P". Did all the prudent things, check the 12vdc not attached to the converter. Alls well on that side.
Installed the converter and with AC plugged in. (Without the battery
attached) outputs at fuse was also good.
Here's where I lose it.
With Converter not plugged into AC! Battery
attached, outputs dc voltage drops to 11 vdc and will not operate a light
Please tell my I am doing something wrong.
I think I need a wiring diagram on how the dc interacts with the converter.