Ok, I'm not sure of the EXACT question you are asking but I may have an answer or two as to what you SEEK...
The 980 uses a 6 PIN din "offset" thingy - they dropped the 4-pin - which is unfortunate - just to add in a WIRELESS MIC the Bearcat 906 - or - as I once posted -
accidentally- BeerCan 906...
From CB Tricks side - as I did WRITE UP a simple "manual" on the guts to the 906...
What does this have to do with your 980? Well - the 906 was set up to use the "Extra pins" the new 6-pin DIN had.
One was Audio Pass - both the Mic and the Handset speaker used the pin for the Handsets' Bluetooth to send audio back and forth between the two..
So since the review itself is long lost to the CB Tricks Forum I originally posted it on, the Text is gone... but the Pics I did up for the 906 are still here...on my PC ...
So what I'm trying to do here, is to help you "reverse engineer" the 980's mic or even the 687's - they used the 906 - so once you know how the plug side worked - then JACK fell into place as mirrored of it...
There are several efforts I did that both the 687 and the 906 I wrote up So both sets of "pics" are based upon the 687 and 906 - but should help you apply your efforts to fix the 980 wiring..
Read all this carefully...If I missed something - due to the nature of the environment I'm currently in - I may not be able to get back here soon enough to solve the problem - so I'm only posting this and I STRONGLY CAUTION you to review and proceed at your own risk...
If the above is acceptable - the 906 was pin to pin compatible to anything UNIDEN used in the 6-pin DIN shown on the 687...
So what you will see now, are the "guts" and MIC - along with a special note about the 687's wiring they used to make it's 4-wire mic work in the 6-pin DIN plug...
906's Innards
View attachment 30873
View attachment 30875
The Mic plug uses Blue Tooth BT technology...
But you still had to hook up the CRADLE to the radio...
This is a pic of the BACKSIDE of that plug...
(From the CRADLE the Handset used)
View attachment 30874
It used all the pins - so since the 906 handset took care of the BT "translation" they needed to send and receive data from the Radio - Audio and RX/TX Switching - you don't want to goof up a good thing...
They allowed the "Dongle" to use only 4 pins - the Mic Handset of the 687 was also USING 4-WIRE mic cord and never used all the 6 pins, only 4...BC906 one pin sends and receives Audio - the other pin was reserved...in the 980 and others - it works the channel changer too...
View attachment 30876
AGAIN - this was a write up for the 687 and 906...
View attachment 30877
So if the mic you're wiring up is a 4-pin. The 980's own mic might need to be disassembled to determine if the two pins serve to "mute" in TX or RX modes - the 687 - only needed 4 - so reverse engineer or back probe the Dongle the 980 comes with - the 6-pin radio to 4-pin mic converter - and see if one of those two reserved pins "short out" in a RX or TX mode. Really? I doubt it - but that is a Uniden Radio technology you're working with...
Gotta' go - XYL calls...
Regards to all...