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I have a Greedy boost gauge which i have just recently connect up. Boost reading works fine but i cant get the back light to work.

I have connected the black wire to my cigarette lighter light, i have just piggy backed this wire and soldered all wires together. I have then got the white wire connected to the same point as i have earthed my Cd player.

The cigareter light is still working but i cant get the boost gauge back light to work.

What am I doing wrong?

Any help would be great guys.

CHeers,

Brenton

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black is probably ground, which should go to where you earthed your CD player.

White is probably power (12v+), which you'd need to tap to the RED wire of your ciggy lighter. Also test that your ciggy lighter works.

From what you wrote, it sounds like you have both wires going to earth.

Yeah what these guys have said is correct... if you've got a multimeter, check to see that the wires you're using hasve voltage. If you dont have one, Jaycar sell cheap ones for $12 and they are invaluable if you're doing any sort of car electronics (or any other electronics for that matter!)

If the light its self is just a blobe it wont matter if the polarity is in reverse.

Get a MM and test at the back of boost G to see if you are getting Volts.

Or even better, just find your self a light power wire, make a test light and play around with under the shroud were the light switch is, then just

strip some off the wire and solder a nother wire off it to your bosst light :wave:

But yeah (BLACK will be -)( and white is +) If it is an LED lit dial it will have a diod built in so you wount have blowen the led by hooking it up wrong. It just wont light up till you have it in the correct polarity.

Hope that helped bud.

kezza

Thanks guys.

I thought it would of been me being a dill and connecting the wires up wrong. Cheers again.

Now I best go and cut my solder away from ciggy lighter power wire and fix it up.

Thanks for your help. if that doesnt work I think I might have a blown light.

Anywho.

Thanks again,

Brenton

Edited by R32_4door_drifting

RED is ALWAYS positive

BLACK is ALWAYS negative

so check your black is grounded and the other wise (if its not red, whatever colour it is) is to the positive wire

you always need a multimeter if doing any kind of electrical work - a good investment

RED is ALWAYS positive

BLACK is ALWAYS negative

so check your black is grounded and the other wise (if its not red, whatever colour it is) is to the positive wire

you always need a multimeter if doing any kind of electrical work - a good investment

generally yes...but not always I have seen plently of setups with other colors used. Esp. setups from O/S.

best way is to use a multi-meter and test everything as suggested - I never trust the wiring lume - find out for sure is the best way.

As for ground..such a common fault from the numerous setups mates have bought over for fixing...I tend to always re-ground my setups and get a really good connection onto the body somewhere...

when I got my GSTS the boost guage was not working...i pulled it apart to find one of the pins was broken of the circit board...a soldered it all back togetehr and presto the beast is alive...howveer this may be a bit difficult if i have no idea. Get the multi-meter (which your gonna buy!) and test the connections...u should see 12V at the pins which plugs into the back of the guage...this will narrow down ur issue.

Edited by khunjeng

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