Thanks Ken. I can use all the information I can get at this point.
Rick
This may or may not help:I have a 1961 catalog and while it doesn't show your specific relay, the Potter & Brumfield SL SERIES has the following information:If the coil resistance is 40 ohms, the voltage is 6 volts. If the coil resistance is 160 ohms, the voltage is 12 volts. If the coil resistance is 630 ohms, the voltage is 24 volts. If the coil resistance is 1400 ohms, the voltage is 36 volts. 73, Ken W2DTC
