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Starter solenoid

Posted: Fri Jul 12, 2019 5:02 pm
by weaver
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hi guys, could anyone please tell me which terminal goes to the far side of the ballast resistor when starting. I took some pictures before removing but the wiring had been chopped and changed quite a bit so doesn't relate to the wiring diagram. Any help would be much appreciated. Cheers Dave.

Starter solenoid

Posted: Fri Jul 12, 2019 5:12 pm
by Old and Slow
Should be easy to determine.
Before attaching the battery lead to the big stud, use a wire from the battery live (with a line fuse in, if you think you might short something) and connect it to one of the small terminals. If you hear a click, this is the solenoid operating, so this is the feed from the ignition starter switch position.
Connecting to the other terminal shouldn't make any noise, as it will be an open-circuit at this time, ready to go to the coil and bypassing the ballast resistor once the starter switch is operated.
Inside the solenoid is a contactor which only applies 12v to the starter motor and the coil when the key is turned to "Start".
Hope this makes sense!

Starter solenoid

Posted: Fri Jul 12, 2019 5:19 pm
by Old and Slow
Of course, this assumes you've put the rest of the circuit in place, i.e. starter motor bolted to the engine and the earth lead connected to the battery.!

Starter solenoid

Posted: Sat Jul 13, 2019 5:17 am
by weaver
Cheers Philip I'll give it a go.

Starter solenoid

Posted: Sat Jul 13, 2019 9:34 am
by gtcse8
What car ?.
Dave please remind me if yours is standard setup or converted in any way.
On standard ,The Flat Lucar tab is switched positive from ignition.
When energised the solenoid has a tab internally that puts 12V battery power to the screwed post to the Left of the Blue wire.
This sends the full power up to the ballast resistor on the Double wire inlet connection, this is Before the power is sent through the resistor.
This sends full power to the coil only on starting.
Mark

Starter solenoid

Posted: Sat Jul 13, 2019 3:10 pm
by weaver
Hi Mark, the car is a standard se6a.

Starter solenoid

Posted: Sat Jul 13, 2019 5:50 pm
by gtcse8
Ok Dave
Then the statement about how it should be is correct.

Mark

Starter solenoid

Posted: Sat Jul 13, 2019 8:47 pm
by peter freeman
The push on is from the ignition switch to energise the solenoid and the screw terminal is the connection which gives 12v to the ballast resistor/coil +ve ( effectively shorting the resistor out ). You can of course connect a relay across the ignition switch which energises when the starter is energised and use it contacts to short out the ballast resistor if connecting a wire down to the solenoid is difficult. Blue is not normally used so some rewiring has been done.