TR7 & TR8 Mailing List

Wiring - white / yellow wire at starter

0 Members and 1 Guest are viewing this topic.

impster@maine.rr.com

Wiring - white / yellow wire at starter
« on: April 05, 2019, 05:47:40 AM »
Can someone remind me of the purpose of the white w/ yellow stripe wire that

is connected to the starter?  Years ago, when I installed a gear reduction

starter, I left it disconnected after being told its purpose and realizing I

could run the car without it.  I'm now rebuilding parts of my wire harness

and wondering if leaving it disconnected will affect anything at the other

end at the ballast resistor.  I can trace the wires in the wire schematic

but I sometimes have a difficult time understanding what each does.

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org



"Jim Altman"

Re: Wiring - white / yellow wire at starter
« Reply #1 on: April 05, 2019, 06:18:35 AM »
It bypasses part of the ballast during cranking to give a hotter spark at

startup.





Jim Altman

jaltman636@gmail.com

"Jim Altman"

Re: Wiring - white / yellow wire at starter
« Reply #2 on: April 05, 2019, 06:18:39 AM »
It bypasses part of the ballast during cranking to give a hotter spark at

startup.





Jim Altman

jaltman636@gmail.com

Wayne@Last-Chance-Garage.com

Re: Wiring - white / yellow wire at starter
« Reply #3 on: April 05, 2019, 08:12:01 AM »
Can I just remind everyone that posting to the list automatically posts to

thbe digest, and vice versa. There is no need to post to both as this leads

to multiple copies.



Thank you,



SentB fromB myB BlackBerryB 10B smartphone.

B  Original Message B

Sujit Roy

Re: Wiring - white / yellow wire at starter
« Reply #4 on: April 05, 2019, 10:01:31 AM »
Seems similiar to a stag I think. By passes the ballast and provides 12

volts to the coil at engine start. That is in the normal setup . Normal

operation the coil runs on 6 volts.

Triplesn8s

Re: Wiring - white / yellow wire at starter
« Reply #5 on: April 07, 2019, 11:03:28 AM »
I didnt know coils only ran on 6V.  The ballast resistor knocks the voltage

down?  Is there any problem with running 12V on the stock coil?  Do

aftermarket coils operate the same way?



Bill

Sent from my iPhone

Sujit Roy

Re: Wiring - white / yellow wire at starter
« Reply #6 on: April 07, 2019, 11:59:50 AM »
For the stag. If u do away with the the ballast resistor. Then get a 3 ohm

coil. Stock with ballast resistor is 1.5 ohm.

Ira

Re: Wiring - white / yellow wire at starter
« Reply #7 on: April 07, 2019, 12:41:20 PM »
Hello Triplesn8s,



Sunday, April 7, 2019, 8:02:32 AM, you wrote:



Triplesn8s> I didnt know coils only ran on 6V.  The ballast

Triplesn8s> resistor knocks the voltage down?



Coils run on 6 volts so that when you bypass the coil while starting with

an almost dead battery on a cold winter morning you still get spark.

Also, the coils run mostly saturated and a ballast resistor limits the

current and prevents overheating of the coil.  There is no problem with

running a 12V coil with no ballast resistor if you want, but under the

wrong conditions, the car might not start.



-- Ira

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org