They may not have the older part available. BUT, it is NOT because the refer has an "open flame" in the back. They ALL do. It may be because that refer is so old the part has been discontinued. There were 2 types if Ignition back then. A PUSH/Click Piezo that you had to push the Ignitor each time to get a spark. And the 12 volt Piezo Ignitor that auto clicked the spark. Regardless, if the exact part is not available, you may be able to modify a current Ignitor to work. Doug
LAST, It is NEVER a good idea to take Tech advice from a PARTS person. They have no clue how RV appliances operate. Doug