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

Cheers
Steve