Maybe this will help!
Probably to easy for most of you. But some of you are new to the hobby. WELCOME! Here is a quick tip!
The best option is to use the right wire. But sometimes, you got two pieces of gear with different connectors. Having one of these mono to stereo audio jack converters can be a very simple solution to why most Pre-Amplifier to Amplifier (and other equipment) 12v Triggers/Trips switch doesn’t work.
As always, check your equipment documentation to be sure what you need. Using the wrong connection, may cause problems.
Hope this helps.