Voltage drop problem

[koolflames]

I want to replace the resisters that are used to convert my 9n from 6 volt battery to 12 volt. I made this conversion years ago and it all worked well. Now I am trying to buy the resisters but the manufacturers don't put the voltage info in their ads. Any help will be appreciated!

 

[Ray,IN]

Go to digikey.com and type in the part # of the resistor, or the specs you need. Digikey is the worlds largest electrical parts store.
A voltage drop is usually associated with dirty/and or loose connections.

 

[HCooke]

Use a 12 volt coil and you will not need any additional resistors.

 

[Jim.ME]

What resistors are involved in your conversion? The original resistor and an additional ballast resistor are the common ones used for a conversion.
Some have added resistors to save changing 6-volt light bulbs to 12-volt ones.

From past discussions of N series front mount distributors getting 6 to 12 conversions on this site, my understanding is the original resistor/junction block (mounted on the backside of the dash) needs to be used with the new 12-volt square coils. A 6-volt coil would need the original resistor and a ballast resistor ahead of the 6-volt coil.

 

[Hobo,NC]

What resistors are involved in your conversion? The original resistor and an additional ballast resistor are the common ones used for a conversion.
Some have added resistors to save changing 6-volt light bulbs to 12-volt ones.

From past discussions of N series front mount distributors getting 6 to 12 conversions on this site, my understanding is the original resistor/junction block (mounted on the backside of the dash) needs to be used with the new 12-volt square coils. A 6-volt coil would need the original resistor and a ballast resistor ahead of the 6-volt coil.

It sounds like he is looking for the "Infamous ballast resistor" AKA current limiting resistance.

From Dell when using a 6V coil on a 12V system.

Use two 1-ohm 10 watt resistors tied together in parallel and the original ballast resistor.

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[Jim WI]

I want to replace the resisters that are used to convert my 9n from 6 volt battery to 12 volt. I made this conversion years ago and it all worked well. Now I am trying to buy the resisters but the manufacturers don't put the voltage info in their ads. Any help will be appreciated!

https://www.yesterdaystractors.com/Ford-9N_Resistor_8NE10306.html

They don't give voltage information because that is not what you need to know, and it would vary by application.

 

[buickanddeere]

I want to replace the resisters that are used to convert my 9n from 6 volt battery to 12 volt. I made this conversion years ago and it all worked well. Now I am trying to buy the resisters but the manufacturers don't put the voltage info in their ads. Any help will be appreciated!

using a bypass starting system is the only reason to utilize a 1.5 ohm 6V coil and a 1.5 ohm ballast . Otherwise use a 3.0ohm 12V coil

 

[bluerooster]

Go to your local auto parts house, pick up a ballast resistor for a 55 chevy, and you'll be good to go.
The coil doesn't care how many volts go to it. It only cares about current. so you need to limit the current by installing a low resistance (1-5 ohms) when swapping from 6v to 12v. Ohms law tells me that a 2ohm 10 watt resistor will do the job.

 

[trewgtregg]

ok i forgot when i changed it. hooking my coil back up which side of the coil goes to the points? + or minus-?. it is a 6volt positive ground system

 

[Jim.ME]

ok i forgot when i changed it. hooking my coil back up which side of the coil goes to the points? + or minus-?. it is a 6volt positive ground system

In your first post above you said you wanted to replace the resistors used convert your 9N from 6 to 12volts. now you say it is a 6 volt positive ground system. What do you actually have? Battery voltage of the system and the battery ground.

 

[buickanddeere]

ok i forgot when i changed it. hooking my coil back up which side of the coil goes to the points? + or minus-?. it is a 6volt positive ground system

Positive of coil goes to the points if the battery Positive is connected to chassis .

 

[trewgtregg]

Positive of coil goes to the points if the battery Positive is connected to chassis .

thanks, following up