I ordered a eMylo RF DC 12V 1 Channel One Relay Wireless Universal Remote Codes Black Color Transmitter from Amazon and will incorporate the soundaktor fuse to an inline connector. Total cost less than $25.00 CDN.
With the wireless remote I will be able to play with 4 different sound modes while driving:
1. PSE off, soundaktor off
2. PSE on, soundaktor off
3. PSE off, soundatkor on
4. PSE on, soundaktor on.
Once the receiver arrives next week I'll wire it up and take a pic. Unfortunately my 718 Cayman GTS is in winter storage so I won't be driving until April.