6 volt accessory ... 12v ignition... help...
Thread Starter
|
FTE Chapter Leader
Joined: May 2001
Posts: 3,322
Likes: 20
From: Rhode Island
6 volt accessory ... 12v ignition... help...
Im currently rewiring a street rod ... and wuold like to use some of the 6v accessories... can anyone tell me how to go abou tdioing this on the cheap...
Moderator
Joined: Aug 2005
Posts: 164,379
Likes: 82
From: MA
Dynamic,
Are you asking how to connect something that requires 6V to a 12V system??
If this is true, then you need to put a resistor in series with the 6V items lead.. The resistor needs to be equal value of the accessory(This is just a rough estimate).. If you know the current (AMPS) the circuit is drawing then you can calculate the resistor value by using Ohms Law (E=I*R).. Example: if you know Voltage is 6V and current is 10A then the resistor value needed is .6O ohms (6/10=.6)
This will make 6Volts across the resistor and then 6 Volts at the accessory..
You can test it before you connect the accessory, by connecting the resistor only, then measuring the voltage. This will allow you to fine tune the voltage before connecting and blowing the accessory..
Hope this helps
Are you asking how to connect something that requires 6V to a 12V system??
If this is true, then you need to put a resistor in series with the 6V items lead.. The resistor needs to be equal value of the accessory(This is just a rough estimate).. If you know the current (AMPS) the circuit is drawing then you can calculate the resistor value by using Ohms Law (E=I*R).. Example: if you know Voltage is 6V and current is 10A then the resistor value needed is .6O ohms (6/10=.6)
This will make 6Volts across the resistor and then 6 Volts at the accessory..
You can test it before you connect the accessory, by connecting the resistor only, then measuring the voltage. This will allow you to fine tune the voltage before connecting and blowing the accessory..
Hope this helps
Last edited by donjamer; Oct 30, 2005 at 09:23 PM.
Elder User
Joined: Jun 2003
Posts: 886
Likes: 1
From: Houston/Hope BC
One option would be to replace the 12V battery with two 6V of about 1/2 capacity each of the original. Install them in series in place of the original. Tap of each battery to your heart's content for 6V stuff (within reason and capacity). Don't know how cheap this would be though.
They also make DC-DC converters, but they aren't very cheap.
They also make DC-DC converters, but they aren't very cheap.
Moderator
Joined: Jan 2001
Posts: 57,025
Likes: 2,756
From: Virginia
Originally Posted by Ecuri
One option would be to replace the 12V battery with two 6V of about 1/2 capacity each of the original. Install them in series in place of the original. Tap of each battery to your heart's content for 6V stuff (within reason and capacity). Don't know how cheap this would be though.
They also make DC-DC converters, but they aren't very cheap.
They also make DC-DC converters, but they aren't very cheap.
Thread Starter
|
FTE Chapter Leader
Joined: May 2001
Posts: 3,322
Likes: 20
From: Rhode Island
well......ive got a 6v heater that i would like to install.....and would like the 6v wipers to work......
Trending Topics
Moderator
Joined: Jan 2001
Posts: 57,025
Likes: 2,756
From: Virginia
Originally Posted by dynamic
well......ive got a 6v heater that i would like to install.....and would like the 6v wipers to work......
Like I said, the wiper motor/resistor thing did not work for me very well. The problem was that the load on the wiper motor varies so much. If the windshield is dry, the load is very high. If the windshield is wet, the load is less, depending on how wet it is.
A resistor drops voltage depending on how much current is going through it. So if you do not have much load, there is not much voltage drop, so the wipers go really fast. If the windshield starts to get dry, the load goes up, so the voltage drop goes up, so the wipers go very slow. It's very aggravating.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Senior User
Joined: Apr 2003
Posts: 385
Likes: 0
For 1 AMP loads and less, the best solution is to go to Radio Shack or your local electonics store and but a voltage converter. Some common types are 7505 5v; 7506 6V. They look like a large transistor and are very easy to wire up. Instructions are included on the package. If you can solder three leads you are in business. You will need to mount them to a heat sink if you get near the 1A rating. Just FYI, probably wont work for large motors and definatly not heaters.