Technical > Spud Miller's Cave
How to ground your magneto with a standard two post master switch.
Spud Miller:
The bummer about the flaming River switch, is that you have to run your primary mag hot wire the length of the car. Not a very good deal. Over time, the chances of it getting rubbed raw and leaving your mag dead are too great in my opinion.
Using a relay is what I suggest. When you cut the power to the car, the relay relaxes and grounds the mag.
Just be sure to use one that is impervious to vibration and can handle the voltage and current. We offer this one:
http://fuelinjectionent.com/webstore/product_info.php?products_id=350
It's really two separate relays in one unit. You can double up and use both sides together to double it's capacity, leave the other side for a spare, or kill two mags with it.
Spud
George:
The Flaming River switch has worked well with the MSD 12lt setup.
ricci32:
Thanks spud that is what I was looking for.
32bantam:
If you use one of the "universal" type block relays...........
1. make sure it is a high amp model.....30/40 amp
2. wire tye it to the harness. Do not mount it to anything. That way it is free from vibration that being mounted brings.
Steve
Spud Miller:
Yup, good tips Steve.
The higher the voltage rating the better too. Make sure it's rated for a high current at 240VAC at least.
Spud
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