Short in a/c wiring

[TxFiddler]

Just wondering what the best way to repair a short in some wiring might be.  The wires that go to the plug of the a/c resistor and that go to the plug on the blower relay are shorting at the plugs.  Should I find new plugs and splice?  Do the new plugs come with pigtails or do they need to be wired?  1980 C10 350.  Thanks.

[VileZambonie]

Are you saying the connector is melted? If so yes solder in new pigtails.

[TxFiddler]

Vile, the connector is not melted at all.  The wires are just loose and don't always make a good connection.  I can get out, open the hood, wiggle the wires at the connector and the fan will come on.  Same thing with the wires on the resistor connector.  If I adjust them just right, I have all the fan speeds.  Do you suggest that i solder the wires that are loose?

[VileZambonie]

A bad connection where current flow stop is referred to as an open circuit. A shorted circuit is when the desired path of current flow is redirected and goes somewhere it is not intended. We typically call these either a short to ground, path of least resistance which will open your circuit protection or short to voltage which will allow other circuits to become active unintentionally.

So you don't have shorted wiring, you have an intermittent open circuit. It's probably due to corrosion so I would just go ahead and clean your connections. If that doesn't do the trick then just replace the pigtail or put new terminals in the connector.