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Illumination supply for new gauges

chadz
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Illumination supply for new gauges

Postby chadz » Sun Jul 06, 2014 12:12 pm

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Hi,

I am installing some new gauges and need to find a supply for the gauge illumination. I understand that I can get this from the wiring loom feeding the radio/cd but I am unsure which wire to tap into. Any suggestions? I have posted a few pictures of the wiring going to my ice. I have previously installed an ISO adapter harness to link up with the Mazda harness as I installed a different radio/cd.

thanks,

Chadz :text-thankyouyellow:
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Skuzzle
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Re: Illumination supply for new gauges

Postby Skuzzle » Sun Jul 06, 2014 3:41 pm

Usually orange on the iso harness.
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Re: Illumination supply for new gauges

Postby chadz » Sun Jul 06, 2014 5:05 pm

Hi Skuzzle,
The orange wire has a tag on it saying 'phone mute' but it's worth a try just in case.

Chadz :text-thankyouyellow:
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Re: Illumination supply for new gauges

Postby Skuzzle » Sun Jul 06, 2014 5:36 pm

Ok. Failing that grab a multimeter and look for 12v on off when switching lights. Ok the orange from the radio is a tel mute.. but look for orange on the iso adaptor lead and trace back (even if youre not using the iso anymore)

Also account for all the wires.. on the cars harness.. the onky other 1 will be illumination.
Youve got 8 for speakers.. 12v perm 12v switch and ground.. olus 12v illumination.
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Re: Illumination supply for new gauges

Postby Skuzzle » Sun Jul 06, 2014 5:37 pm

Or the back of the heater panel
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Re: Illumination supply for new gauges

Postby Skuzzle » Sun Jul 06, 2014 5:37 pm

Or.. back of the dials (that illumination wire is labled where the connector plugs into the circuit board)
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Re: Illumination supply for new gauges

Postby Mazda Mender » Sun Jul 06, 2014 9:25 pm

That wiring Dia for that unit does not need a illumantion wire,try tapping into the orange wire in pic 2934 that seems to be looping back on itself?.
M-m
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This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 .
Mk 1 Eunos 90 1.6 soul red ..f/ build
MK 2.1/4 Blue V.S Roadster 1.8 99 ..
MK1 1.8 ,white import.. (Ashleighs)
MK1 1.6 yellow J ltd import.f/build
MK 1 1.8 black Tokyo Ltd..f/build


http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
chadz
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Re: Illumination supply for new gauges

Postby chadz » Mon Jul 07, 2014 11:21 am

Hi guys,

Thanks for your input. The orange wire doubling back was the modification I had to carry out to power the speakers. What I did was to chop off the phone mute wire (not needed) with the metal connector and piggy back it onto a power source (blue wire obscured in photo) then placed in the appropriate hole in the connector that mated with the speaker power line in the mazda loom/connector.
This worked perfectly.
I am looking at the possibility of joining the negs for light and gauge and the pos's for light and gauge and tapping them into the switched 12v supply and earth shown on the back of the player. This may mean that the gauges are illuminated when the ignition is on ie during the day as well as night but not all the time and that will be a small price to pay for getting the job done without any hassle. A couple of banana type connectors will enable me to make and break the connection whenever I chose and will make the installation easier than permanent connections. When I've done it providing it works ok I will post a few pics.
Does that make sense? If you can see any flaws in my grand plan please let me know.

Chadz :handgestures-thumbup: :text-thankyouyellow:
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Re: Illumination supply for new gauges

Postby chadz » Wed Aug 13, 2014 9:43 pm

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Finished installing the new gauges this afternoon and they work ok. As previously noted they are illuminated when the ignition is on and are not part of the lighting circuit. I do have a problem however and that is that my radio/cd/mp3 player has lost all sound although it comes on and radio stations are all there as well as other functions, just no sound. Last time this happened I had to make a slight mod to the ISO adapter harness to power the speakers taking a supply from the aerial wire. The aerial still works but does not share its power with the speakers!
Does anybody know what may be going on? I did not change any wiring on the HU loom apart from tapping into the switched supply to power the gauges. Everything else seems to be in order and the fuse on the back of the player is intact.
Any ideas would be most welcome.

Chadz :confusion-shrug:
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Re: Illumination supply for new gauges

Postby Mazda Mender » Wed Aug 13, 2014 10:49 pm

Disconnect thhe one to the switched supply and see what happens.
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 .
Mk 1 Eunos 90 1.6 soul red ..f/ build
MK 2.1/4 Blue V.S Roadster 1.8 99 ..
MK1 1.8 ,white import.. (Ashleighs)
MK1 1.6 yellow J ltd import.f/build
MK 1 1.8 black Tokyo Ltd..f/build


http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
chadz
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Re: Illumination supply for new gauges

Postby chadz » Thu Aug 14, 2014 8:16 am

Hi Wayne,

Do you mean disconnect the new feed to the gauges? As I have an inline fuse this can be achieved by removing the fuse. I will try this and look at the earthing arrangement also.

Chadz
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Re: Illumination supply for new gauges

Postby Mazda Mender » Thu Aug 14, 2014 10:42 am

Yeah, kill the tap in feed you did and see what happens with the sound, it might not do anything ,but you seem to have some strange gremlins going on with the electrics.
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 .
Mk 1 Eunos 90 1.6 soul red ..f/ build
MK 2.1/4 Blue V.S Roadster 1.8 99 ..
MK1 1.8 ,white import.. (Ashleighs)
MK1 1.6 yellow J ltd import.f/build
MK 1 1.8 black Tokyo Ltd..f/build


http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
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Re: Illumination supply for new gauges

Postby Lazza » Thu Aug 14, 2014 11:13 am

Please forgive the numpty question... but are you sure the stereo doesn't have a mute function that is switched on?

Also, do not try to "power" the speakers. The speaker wires are all that's needed, there is nothing to power. Unless your old HU was a Bose system, in which case there might be an amp hidden away somewhere...
Lazza

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Re: Illumination supply for new gauges

Postby Mazda Mender » Thu Aug 14, 2014 12:05 pm

I agree with Lazza with a power feed to the speakers.
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 .
Mk 1 Eunos 90 1.6 soul red ..f/ build
MK 2.1/4 Blue V.S Roadster 1.8 99 ..
MK1 1.8 ,white import.. (Ashleighs)
MK1 1.6 yellow J ltd import.f/build
MK 1 1.8 black Tokyo Ltd..f/build


http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
chadz
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Re: Illumination supply for new gauges

Postby chadz » Thu Aug 14, 2014 4:28 pm

Thanks guys I'm pleased to get any suggestions because its often the simple things that can be overlooked. The unit does have a mute function but I have toggled between the off and on position until my finger got sore doh! The previous system was a Bose and as per my previous posts I had to hook up a power source for the speakers to match the mazda loom. The adapter loom I got was for a mazda mx/eunos/miata but it was missing the vital power for the speakers. I overcame this problem by cutting off the telephone mute cable along with the metal pin as I new this was not going to be used and then soldered piggy back onto the blue (aerial power) wire, looping it over into the hole in the connector I new matched the green/black wire on the Mazda loom. This solved the problem and enabled sound. I think this is visible in one of the photos I posted.
This new lack of sound has only come about since fitting the gauges and all I did was tap into the switched power supply (red) wire for the gauges, nothing else. I took great care in handling the unit and did not short anything or hear any bangs or smelled any insulation melting. In short I was very careful not to mess things up. Result! I messed up :angry-screaming:
I thought that I had solved the problem when I came upon the reset button as this has to be reset when things have been disturbed, power supply/connector discon etc. Did it do it ?Noooooooooooooooooooooooooooo! :angry-banghead:
On the plus side I have three operational gauges and on the downside a piece of junk sitting above them. :angry-cussingblack: How can things go so wrong so quickly? I was going to fit the old Bose system back in place to see if the new unit was cooked somehow but this proved to be mega difficult for some reason as the old loom would not pull out enough to enable me to make the single connecting block. To look at the unit it flashes and all the visual info and buttons work fine for selecting different modes and stations but the sound remains illusive just as it was before I modified the new ISO adapter. I thought that was a touch of genius but this has really stumped me. If you think this could be placed elsewhere for more coverage please move it. I did look at the Audio (Head Unit) and speakers forum but could not see anyway of adding this post to it. Is their the remote possibility that I have cooked something in the unit and if so what would that something be and can it be fixed? Is their a way of bench testing these units to prove whether or not it is bust? Failing that it looks like a new Head Unit. :confusion-helpsos:

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