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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: andrej_gr on December 13, 2018, 03:41:26 AM

Title: Low fuel light
Post by: andrej_gr on December 13, 2018, 03:41:26 AM

G'day gents,

I've replaced the original speedo on my 1995 K75 with aftermarket one, but would like to keep the low fuel light. Can I simply connect it like other lights (battery charge, choke etc.), which is + to connected power and - to pin 7 of dashboard connector? Or there is some logic for this light in the original dashboard?

Cheers

Title: Re: Low fuel light
Post by: Laitch on December 13, 2018, 06:56:40 AM

Which model of aftermarket gauge are you installing? Midway through this post (http://www.k100-forum.com/t9265-messing-with-the-in-tank-fuel-sender) is an explanation of one way to adapt OEM fuel level senders for aftermarket gauges.

Title: Re: Low fuel light
Post by: rbm on December 13, 2018, 07:43:56 AM

If all you want is for an indicator on the gauge to illuminate when the fuel level is low, then you can connect the White wire (Pin 7) to the appropriate wire on your gauge.  Make sure the indicator LED is active LOW, meaning it will light if the wire on the gauge is pulled to ground.

Title: Re: Low fuel light
Post by: andrej_gr on December 14, 2018, 09:46:01 PM

Yep, I want just the low fuel indicator and that answers my question. Thanks!

Title: Re: Low fuel light
Post by: andrej_gr on January 22, 2019, 07:07:19 PM

So I've connected LED to pin 7 and all is good, however if the tank is not full it flashes whenever fuel moves around (e.g. on dips, sudden deceleration etc). The flashes are like 0.5s or less. Any easy way to solve this? Maybe a capacitor?