Radio noise
- Thread starter fcgadget
- Start date
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Make sure the coil and alternator are well grounded. I had to put a ground strap from my exhaust pipe to the frame to get rid of some similar noise in my cb radio. There are also capacitors you can put on your alternator that will help - don't know that you want to put one of those on your coil though.
What coil did you buy?
What coil did you buy?
Engineer8000
SILVER Star
@ToyotaMatt
Yep usually a ground issue with radio noise even on modern cars
What coil? Where do you have the shown ground on the diagram installed?
Engineer8000
SILVER Star
One side to coil, other side to ground.
+ coil terminal or - terminal, or does it matter?
If - terminal, does it matter if the dizzy is old school points/condenser (therefore 2 condensers on negative terminal wire) or if its ignitor style or Pertronix?
- Thread starter
- #9
my replacement coil is a NAPA Eichlin
there's no separate ground from the coil- ....there is a ground from the Fireball box, don't know if that's a straight from ground or through some circuitry...I'll have to throw a meter on it...
there's no separate ground from the coil- ....there is a ground from the Fireball box, don't know if that's a straight from ground or through some circuitry...I'll have to throw a meter on it...
Engineer8000
SILVER Star
FSM shows it on the + side. You typically install it on the + side of the coil for RFI suppression. The one on the negative side (on the distributor) would be to protect the points contacts.
factory:
factory:
- Thread starter
- #12
as usual, my setup looks nothing like most of what is posted. Connections/jacks are not in mine, components are different. Sometimes makes me wonder just how many variations on a theme there can be.
The capacitor from coil + to ground seems like the best idea. I will try it and see
Thanks all!
The capacitor from coil + to ground seems like the best idea. I will try it and see
Thanks all!
Engineer8000
SILVER Star
They are usually specified .5 mfd (really 0.47uf) 200-300V. The one Matt sells fits the bill.
- Thread starter
- #15
I went looking for a RF noise suppression capacitor, after hitting numerous "parts" stores and getting the same confused look from every one of them, I found a store that not only knew what they are, but actually had one in stock! I didn't care what the specs were. They did have it listed under condensor, not capacitor.
Put it on the coil+ to ground and everything works just like it should.
Put it on the coil+ to ground and everything works just like it should.
Engineer8000
SILVER Star
Small engine shops will have them usually, you can find a kohler or onan PN for the value you are looking for.