Alternator and lights issue.

[pontiacgp]

it tells you the size of the resistor in the diagram

 

[Tad Farmer]

10 + 2 - 1 =11. So 11ohm? Like i said, not very knowledgeable on this stuff. I would rather ask questions and do it correct the first time while learning something then spending more money then needed and redoing it 3 times.

 

[pontiacgp]

you can use anything between 35 ohm, 5 watt, and 500 ohm, 1/2 watt

or you can buy one with the resistor...

http://www.speedwaymotors.com/Alternator-Wiring-Harness,2373.html

 

[Tad Farmer]

you can use anything between 35 ohm, 5 watt, and 500 ohm, 1/2 watt

Alright thanks, appreciate the info.

Regards,
Tad

 

[Wageslave]

don't you mean resistor?, a diode just regulates the direction of the flow of the current.....

I recommended the diode as it was what I was using and it was working well. That and I was not sure where where to get a correct resistor easily. Any of the three methods will work though.

The diode will just prevent the back feed by not let current flow from the alternator back through the wire as opposed to the resistor or light bulb that bleeds it off as heat.

 

[pontiacgp]

I recommended the diode as it was what I was using and it was working well. That and I was not sure where where to get a correct resistor easily. Any of the three methods will work though.

The diode will just prevent the back feed by not let current flow from the alternator back through the wire as opposed to the resistor or light bulb that bleeds it off as heat.

A diode will prevent backfeed but without the resistor the alternator will not get excited and will not charge. With a resistor there is no need for a diode as articles on the subject will point out.

 

[Wageslave]

The diode itself provides a little bit of resistance in the forward direction. I think the diode option came about to help out with letting low RPM vehicles start charging closer to idle. Apparently the higher the resistance of the resistor, the higher the RPM that the alternator will switch on for the first time.

All options are good options though.🙂

 

[pontiacgp]

The diode itself provides a little bit of resistance in the forward direction. I think the diode option came about to help out with letting low RPM vehicles start charging closer to idle. Apparently the higher the resistance of the resistor, the higher the RPM that the alternator will switch on for the first time.

All options are good options though.🙂

I would like to see an article on that....

 

[Tad Farmer]

When I was looking at the part you linked I seen it uses a diode. So I am sure both ways would work.

 

[Wageslave]

http://www.redpowermagazine.com/forums/topic/71089-1066-alternator-wiringand-resistor/