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Author Topic: Boost gauge  (Read 2865 times)

R33Dan

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Boost gauge
« on: August 12, 2013, 07:41:24 PM »
OK so I bought an electrical boost gauge and am just wondering where it would be best to wire it too.

It needs battery, ignition, ground, and dimmer cables wired in.

I was told by the guy I bought it off to wire it to the headunit, however someone else told me that was a bad idea haha.

Where would be the best place to wire it too?

Obviously the battery wire is a 12V constant, the ignition is 12V for when the ignition is on, the ground is a ground, and the dimmer switch is a 12V when the headlights are turned on? I think? haha

But yeah any help would be highly appreciated.

Car's an R33 GTS25T if that matters.

Thanks!

BADHAB|T

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« Reply #1 on: August 12, 2013, 08:45:56 PM »
Wiring this to the head unit wiring is absolutely fine. All the wiring is factory fused, the amperage rating is plenty high enough and all of the wires you need are in one spot.
If your headunit is aftermarket you can use this to help splice the wiring into where it should go -
Yellow - permanent power
Red - Accessory. Not an ignition source so all that means is the gauge will be "on" when the key is in the ACC position.
Dimmer - Orange. Not all aftermarket stereos have this feature but the circuit is easily tested for (let me know if you need more info here)
Earth - there is no Earth on a Nissan stereo loom, so use a ring terminal and attach it to the stereo brackets or any piece back there that's grounded (there are a lots of places)

The dimmer feature will dull the back lighting of the gauge when you turn your headlights on - so the gauge isn't blindingly bright at night

R33Dan

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« Reply #2 on: August 12, 2013, 08:59:01 PM »
So the red wire is not an ignition source? or is?

& Yeah it has a JVC aftermarket head unit, so that should apply?

BADHAB|T

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« Reply #3 on: August 12, 2013, 09:03:18 PM »
It's an Accessory power.... meaning it powers up one key turn before the Ignition power. I'm a pedantic a55 when it comes to wiring and things like this on my car - I'd even wire it up the way I suggested :) It won't hurt anything, it just means the gauge will light up on the first key turn, not the second

Yep, those colours will apply with it being JVC

R33Dan

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« Reply #4 on: August 12, 2013, 09:12:40 PM »
So I can just say its an ignition wire... yeah? haha

I don't really care what position the keys in :P

BADHAB|T

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« Reply #5 on: August 12, 2013, 09:23:28 PM »
Quote from: DanEdser;619098
So I can just say its an ignition wire... yeah? haha

I don't really care what position the keys in :P


Bingo ;)
It will be working when the engine is running, that's the important thing

R33Dan

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« Reply #6 on: August 12, 2013, 09:30:04 PM »
Sweet! cheers man!

Much more helpful than the 2 other forums I posted in hahaha

Demco

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« Reply #7 on: August 13, 2013, 02:16:11 PM »
Gareth is a legend with stereo wiring thanks too this helped me with wiring my boost gauge :D
♜♞♝♛[Firing order: 1-5-3-6-2-4]♚♝♞♜[/b]
[SIGPIC][/SIGPIC]
ARRRHHH THUUURRRTYYY TWOOO
Progress 98%

[ ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||[/COLOR] || ]

R33Dan

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« Reply #8 on: August 27, 2013, 04:32:58 PM »
Just to confirm... This is the correct wiring harness?


BADHAB|T

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« Reply #9 on: August 27, 2013, 05:28:28 PM »
Yep... but to be tidier, splice into the factory stereo wiring - not the stereo wiring harness :)

A31_25DET

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« Reply #10 on: August 27, 2013, 05:29:20 PM »
yea mate spot on, maybe look at how this harness has been connected to the factory loom and splice guage wires in there.

As Gareth said Yellow = 12V and Red = accessory

Personally not to phased about dimmer wires :) but thats me haha
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Nothing better than the feeling of hitting boost.......................and still thinking you have control!!

R33Dan

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« Reply #11 on: August 27, 2013, 09:22:58 PM »
All done, used the wiring harness as was much easier and could solder outside of the car.

I haven't connected the boost sensor cable, as I broke it and am awaiting a replacement.

It does the little spin round the needle thing when I turn ignition on, then just flashes. Is this the gauge just telling me I haven't plugged the boost sensor in?


benji-nz

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« Reply #12 on: August 27, 2013, 10:42:17 PM »
Probably its way of logging a fault.
"I ran a 25 turbo on my 20 when I had stock cams. Managed 300whp at 24psi on e85 figured that was the max on that turbo"

AGRORB

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« Reply #13 on: August 28, 2013, 06:15:44 AM »
The initial full sweep is a self diagnostic, the flashing, as mentioned, will be an error/warning.
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mlracing.co.nz

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« Reply #14 on: August 28, 2013, 09:46:32 AM »
Yeah it means it hasn't got a signal from the sender, you haven't received yet?

I will follow up, super slow from Fastway.
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