Ballast Resistor

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Ballast Resistor

Postby Matty104 » Fri Oct 03, 2008 10:29 pm

Hey guys,
ive been seaching and searching for what wires i hook up to the ballast resistor, its just a 4k engine, and can't find anything that makes sense to me

could someone please let me know how to do this

thanks heaps
Matt
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Postby Bling » Sat Oct 04, 2008 11:17 am

take a photo of the wires and ballast resister. I know for a KP starlet, but if you can take a photo of the ballast resister in place with the wires around it, it will be easier

Should be positive of coil on one end of resister and the other wire should be earth I think
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Postby Mr Revhead » Sat Oct 04, 2008 3:18 pm

it is definitely a ballast resistor type dizzy?
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Postby Matty104 » Sat Oct 04, 2008 7:18 pm

i can take a photo but im not sure how much help it will be as i got the car as a rolling body and everything has been stripped since so its not really where it should be , i no what wires are which i think , just need to know which ones i connect to it, ive heard two ways : + of coil and the starter wire on the other end... and positive on one end and negative on the other

any of these sound right?, if so how do i connect them to it? do i do it like a T intersction style off say the wire that goes from the starter to the key and the one going from the loom to the + of the coil?

as to Revheads comment i am unsure weather it is or not, i was told that i needed one,

as you can probly tell i am a noob to alot of stuff like this, its my first project car and i am learning as i go along
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Postby Lloyd » Sat Oct 04, 2008 7:31 pm

You need to have your ignition feed (12V with key at ON position) into one side of the ballast and the other side going to the coil positive. On the coil positive side you also need to have a 12V feed when the key is in the START position.

Basically the ballast drops the voltage to the coil when the engine is running, but you bypass it to give full juice to the coil under cranking.
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Postby Matty104 » Sat Oct 04, 2008 7:43 pm

like this??

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Postby MAGN1T » Sun Oct 05, 2008 10:48 pm

No.

HRT got it right, the coil runs on 8 to 10 volts but when cranking gets 12 volts.

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Postby Matty104 » Sun Oct 05, 2008 11:14 pm

it starts / cranks fine now , was looking to find out how i hook it up so that the voltage does drop when the key is in the on position so i dont burn the coil out
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Postby Lloyd » Mon Oct 06, 2008 5:54 pm

Try something like this

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