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Go Back   Madabout Kitcars Forum > Mad Build Area > Tribute Automotive Builds

Tribute Automotive Builds Discuss your Tribute kit build

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  #1  
Old 27th July 2019, 11:22
Drummajor Drummajor is online now
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Default MX5 dash lights , electrical issue

Guys, any electrical gurus out there?
My mk2 MX5 now has the super charger fitted and megasquirt2 Ecu .
Those also in the know know that you have to fit a mk1 alternator as it is self regulating as the mk2 alternator is regulated via the Ecu (which has now been removed to fit the mega squirt)
All works fine , however I do not any longer have the battery charge light on the dash which should go off after a few seconds .
Is there a way around this ? As the mot man may wish to see it.
Many thanks
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  #2  
Old 27th July 2019, 15:15
Drummajor Drummajor is online now
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Could I fit a volt meter dial in the absence of the charge light ?
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Old 29th July 2019, 22:20
landmannnn landmannnn is offline
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The lack of a charge light isn't an mot fail. You could do a bit of wiring to get the light working, but a voltmeter is much better solution
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Old 30th July 2019, 08:01
Drummajor Drummajor is online now
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Quote:
Originally Posted by landmannnn View Post
The lack of a charge light isn't an mot fail. You could do a bit of wiring to get the light working, but a voltmeter is much better solution
Thatís good, I was considering a voltmeter anyway .
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Old 30th July 2019, 08:31
Mick O'Malley Mick O'Malley is offline
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Lightbulb Belt and Braces

I always have both, as I'll see a light more quickly than the gauge hovering around 12v instead of 14+......



Regards, Mick
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  #6  
Old 30th July 2019, 09:38
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froggyman froggyman is offline
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On most alternators the lamp feed energises the alternator I think.
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Old 30th July 2019, 11:14
oxford1360 oxford1360 is offline
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Just out of interest, the yellow wire coming out of the alternator...where does that go?
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Old 30th July 2019, 11:59
Mick O'Malley Mick O'Malley is offline
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Lightbulb

Quote:
Originally Posted by oxford1360 View Post
Just out of interest, the yellow wire coming out of the alternator...where does that go?
The two thick spades on an alternator are joined internally, a continuity test will confirm this, so either can be used as a positive feed. The thin wire, in series with the ignition/charging lamp simply energises the field.

Regards, Mick
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Old 30th July 2019, 13:23
Phaeton Phaeton is offline
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Quote:
Originally Posted by froggyman View Post
On most alternators the lamp feed energises the alternator I think.
I was also of this opinion, that's why with most digital dashes you have to either fit a resistor or hide a normal 5W bulb somewhere under the dash.
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