Ignition coil resistor?
Elder User
Joined: Dec 2006
Posts: 559
Likes: 0
From: Redondo Beach, CA
The ignition coil resister or Ballast Resistor is used to drop battery voltage to ~9 v at the points and coil while the engine is running. The resistor is bypassed when cranking the engine to supply full battery voltage for starting.
Most resistors will get hot, but it should not be smoking unless you got some oil or something on it.
Most resistors will get hot, but it should not be smoking unless you got some oil or something on it.
Mountain Pass
Joined: Nov 2011
Posts: 225
Likes: 0
Rcm292
how about some more info?
do you have this kind of coil resistor?
NAPA AUTO PARTS
what year, make and model is it?
was it running before you did this?
have a nice day!
how about some more info?
do you have this kind of coil resistor?
NAPA AUTO PARTS
what year, make and model is it?
was it running before you did this?
have a nice day!
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
The resistor is required to drop the battery voltage down to 9 VDC (or whatever) for normal operation. On startup, the full 12.8 VDC is directed to the coil for a "hotter" spark and quicker starts. Some coils are designed to accept this full 12 volts, but not the OEM part. So, depending on what coil you have installed, you would have to bypass this resistor, it (resistor) should get hot but not smoking?
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