I can't find any info on this and a friend from another board once measured and I THINK got 0 ohms ( it was long time ago ). actually the last time I got a shunt from a Mopar in hands really seemed to me a regular wire.

I have being playing with idea of the Ammeter shunt conversion on my 74 Charger using a 77/80 Lebaron ammeter, since is the same size, deepness and needle disposition. And got the led indicator which I think is a Low voltage indicator ? would need just to play with the face interchange and some other detail

http://www.forbbodiesonly.com/moparforum/attachments/img_4330-jpg.411428/