Hi there atob37,looking at the pics.,I don't think that's a Din plug,it's similar but more heavy duty.You're only using 6 of the 7 pins,that usually means the 7th pin is used as an alignment pin,N/C on this pin. Pins B,D,and F are the audio shield/gnd. and pins A,C,and E are the "hots",which are shorted to gnd.to complete the circuit.Peavey amps have been using this since the 70's,(along with a lot of others).You can make up a box with some foot sw.'s and you should be in buisness.I'd prob. change that connector to a Din if it was mine,more common.Hope this helps,good luck Mel.