Issues with mirror heating


Passed Driver's Ed
I've got an issue with my driver's side mirror heater not working. I periodically have the fault code 00943 'Heated exterior mirror driver side (Z4): electrical fault in circuit'. I removed the glass from the mirror cap/housing to inspect the connections and one connection appears to be considerably loose. They are attached to the heater element by what looks like adhesive layered over top of them (not clips). I am going to try to get my hands on a multimeter and look at some of the values to see if the circuit is incomplete simply due to a bad contact.

Assuming it is just a bad contact...
Has anyone had these apart and back together? If so what did you use to re-establish a good connection between the wires to the heater element?

Thanks in advance for any help :)