Em Gurus
I found online that on 1960s Bally Coils
Coil E-184-190 (orange 3 lugs) could be replaced with a more modern coil such as a AF-25-600
Question is what is the correct wiring from the Old Coil to newer style
Didn’t see any sources online from coil to coil and don’t want to blow a fuse
Thanks
D953C8F8-1FF4-4504-A349-5286386C4ADF (resized).jpegFEC97133-5966-4060-923D-971718687220 (resized).jpegThree lug solenoids are usually wired like this:
solder lug -- high power winding -- solder lug -- low power winding -- solder lug
If you examine both coils you might be able to identify the three different solder lugs on both coils:
- a lug with a thick copper wire (high power winding)
- a lug with a thin copper wire (low power winding)
- a lug with a thick and a thin copper wire (both windings)
Or you could use a multimeter and compare the resistances of different pairs of lugs
- the lowest resistance between two lugs is probably the high power winding
- the middle resistance is probably the low power winding
- the highest resistance between two lugs is probably the low and high power winding in series
/Mark
Quoted from MarkG:Three lug solenoids are usually wired like this:
solder lug -- high power winding -- solder lug -- low power winding -- solder lug
If you examine both coils you might be able to identify the three different solder lugs on both coils:
- a lug with a thick copper wire (high power winding)
- a lug with a thin copper wire (low power winding)
- a lug with a thick and a thin copper wire (both windings)
Or you could use a multimeter and compare the resistances of different pairs of lugs
- the lowest resistance between two lugs is probably the high power winding
- the middle resistance is probably the low power winding
- the highest resistance between two lugs is probably the low and high power winding in series
/Mark
Thank you so much
For future reference there are a couple of closeup photos of 3 terminal coils with thick and thin wires at:
https://www.funwithpinball.com/learn/flippers-coils-and-power
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Sherrill, NY