In 1978 the part number is 388702 or 18-3051 is it possibly a later gearbox?
The horn itself has circuitry that chirps the horn when power is applied to it. The fact that you have 180-190 v on the browns is great. The stator
You should be able to see the part number on the old impeller if you look close?
Thanks Ricardo. I think i found a plug I can use. it's #3 on the diagram.
I have answered my own question. The later complete repair kit and housing found on this site uses a different size impeller than the original. It is