MAD electrical upgrade question??

So the 67 cuda is doa and symptoms are leading to original ammeter. Ive read the MAD upgrade article.
Instead of pulling cluster ( big job, ac radio etc lol) Can I not just snip the large red and black wires (black one after the splice)
And loop together closer to inside bulkhead connector?
Not pulling cluster would save me quite a bit of time and bs

That would work but I was able to reach in up behind my cluster and loosen the 2 nuts and slide all of the wires onto one stud. Took about 5 minutes.

Cheers
Steve