Try one of these https://www.amazon.com/dp/B002N1XMPO

with a mono-to-stereo adapter. I use one of these for my handheld scanner.

AHA, that's... well that's dumb now isn't it! Thank's for the reply. It sounds to me like the cables might be a tad useless for their intended purposes at this point unless I order 3.5" stereo to mono adapters. Would you agree? If I can salvage these 2 brand new cables I would like to do so.

Here’s my old school solution! Deaf from birth in my right ear so used these in my CD Walkman days.

Monoprice 107128 3.5mm Mono Plug to 3.5mm Stereo Jack Adaptor, Gold Plated