Yes TDL, and my wiring looks similar.
I was really surprised that dixmor didn't know right off the bat. but it is simple conversion. What initiated the phone call was not knowing how to wire the horn, but they did inform me I needed a different horn than what IDX uses.
I also thought about adding a wire and third function to identify spot remover on the display, but haven't done that yet.
I'm using the LED9 multi function model but I'm thinking of running count up in $ on my cryptopay so I won't really be using the multifuction since the timer can't account for the changing of functions when CC is used. However, all devices will work the same on the property when CC is used and eliminate customer confusion. On vacs, I'm going to do a $2.00 startup for 8 minutes and will trim the time down over the next couple of years (re-opening a closed down car wash)