I hesitate to try to help you with this because I am not sure what you are going to need. The Majesty will accept both mono and stereo jacks depending on what you want. You do a little dance with the piezo volume knob to select stereo or mono (combined piezo/Demarzio) signal. As to your question, I have been looking for a 90 degree stereo (TRS) cord for a couple of years now without luck. If you find one please share your source.
I have a standard stereo cable that came with my Parker, but it is short and also no 90.
I found one on ebay for $46 delivered, but I can' find any feedback about the quality. US-made, two neutriks and a switchcraft, so looks like quality components.