15V
From MAD electrical
I used to work HVAC, and a very common problem with electric forced air furnaces (used for heat and backup heat for heat pumps) is FAILURE OF THE 1/4" flag terminals, same ones as used in the bulkhead connector. In a furnace, these feed 5KW 240V heating elements, so nominal TWENTY AMP loading. That's all it takes to fail some of these connectors
Below is a typical old school electric furnace, chock full of 1/4" flag connectors.....the very same terminal as used in our Mopars except with a key to keep them in the plastic connector shell
Actually it is also the ammeter depending on the year. The problem: The studs/ connections depend on nut tension to sandwich everything together, including insulating washers, the connection between the wire ends, the connection between the studs and shunt, the "guts" of the ammeter. Some cars have a plastic cluster housing, and ANY heating will soften the plastic and loosen the connections even more, causing MORE heating, the "snowball effect." The CLASSIC ammeter fail is pictures on the MAD electrical page, and "up here" back then when guys put winches and electric snowplow lift pumps in picks, THE CLASSIC fail was a melted ammeter, smoke from under the dash, and 'that plastic burning smell'
From MAD electrical
I used to work HVAC, and a very common problem with electric forced air furnaces (used for heat and backup heat for heat pumps) is FAILURE OF THE 1/4" flag terminals, same ones as used in the bulkhead connector. In a furnace, these feed 5KW 240V heating elements, so nominal TWENTY AMP loading. That's all it takes to fail some of these connectors
Below is a typical old school electric furnace, chock full of 1/4" flag connectors.....the very same terminal as used in our Mopars except with a key to keep them in the plastic connector shell