09-06-2018, 02:57 PM
Hi John, I'm at work currently but I'll get a picture later this evening of my 7 pin tube socket connected to my ARBE III and the schematic of the 37-623J as the battery connections are the same as my 38-643B. The A+,A- terminals are set to 2.0V on the ARBE III before I connected the A+ & A- leads from the radio battery wire harness and the 7 pin plug is inserted in the socket that is connected to the ARBE III for the B & C voltages and it works great. Ken