i need some electrical help fast please!!

zuni · 07-12-2007, 10:20 PM

ok i bought these reverse glow gages i got them all put in the correct slots. now i need to hook the power wire and the ground wire up. my question is can i just tape into the back of the gauge cluster and use one of the ign+ screws and which one would the ground be. i want to be able to use the factory switch to turn them on so if someone can help me please do. these didnt come with any god damb instructions so im at a stand still.

http://www.originalskintattoo.com/carpic/a.jpg
http://www.originalskintattoo.com/carpic/b.jpg
http://www.originalskintattoo.com/carpic/c.jpg

Here are some pictures if you need to see what im talking about. thanks a bunch

supradaddy0803 · 07-13-2007, 01:14 AM

If you hook up the light wires to the dimmer switch they will turn on when you turn the lights on. The wire you are looking for on the dimmer switch plug is the white with a green stripe. Just go buy some inline splices and splice into that waire and they will light up with the headlight switch. But as for power for the gauges themselves the best way is to tap into the gauge circuit fuse off of the wires on the bakc of the gauge cluster because tieing down to the board on the back of the gauge cluster might have bad consequences. if you short something then everything will go out. any power source that comes on with the key is good like the EFI fuse it is 15 amp and that is what I have my tach tied into.

zuni · 07-13-2007, 01:42 AM

all i need is a power and a ground the gauges come with its own dimmer switch i just need to hook up 2 wires. a red and a black. but i need to find where to hook them up so that when i turn on my lights the gauges will turn on. im confused a little about what i should do.

supradaddy0803 · 07-13-2007, 07:17 PM

Ok if you want them to come on when you turn on your head lights then hook them to your dimmer switch the reason for this is it gets its power only when the head lights are on. I was wrong before though hook the red wire to the solid green wire on the dimmer switch this will allow for when you turn on your head lights the lights on the gauges will come on. If you want the lights on the gauges to comeon all the time as soon as you tunr on the ignition then hook into your EFI fuse then when you turn the key the fuse gets hot and the lights will come on. I hope this helps if you have any more questions then post away.

gpgtp_22 · 07-13-2007, 09:06 PM

if you want to tap into the back go to ign+ and earth that would be your ground or ign- should work the same too

cre · 07-14-2007, 07:31 AM

I wouldn't recommend powering the EL inverter via the soft circuit on the back of the cluster. They're old, and were only designed with a certain tolerance above "normal" in mind. I've seen them burn up from people simply tapping one line for a few additional LEDs.

I also advise against anyone trying to use the stock dimmer's output (white wire w/ green stripe) to power and/or control EL gauges. There have been a few different revisions of the internals of the dimmer, none of which can support a much heavier load. Additionally about half the dimmer's I've see supply a gradiated ground and the others supply a gradiated positive signal (these are a potential divider. Simply put, if your ground is at 2v and your + is at 12v the circuit in between actually sees 10v.). Also, if you've got the latter of the two the scale is the opposite. A light fed a + from the w/g wire will brighten as the rest of the gauges are dimmed.

A further reason not to use the dimmer's output as a positive signal is that you may create a low resistance ground path for the rest of the gauge lighting and the dimmer. Depending on which type of dimmer you have you can damage the dimmer or the newly added device.

To wire them to come on with the taillamp circuit supradaddy0803 is right, use the solid green wire which supplies the dimmer for your positive and the white wire w/ black stripe for the ground.

zuni · 07-14-2007, 05:23 PM

thanks everyone i got them in and there working great. i used the green wire on the stock dimmer switch to power my new gauges. however i grounded the ground wire to a bolt back in the dashboard that was connected to a big pice of tubed steel and it works great. thanks to you all once again.

Quote:

Originally Posted by cre

I wouldn't recommend powering the EL inverter via the soft circuit on the back of the cluster. They're old, and were only designed with a certain tolerance above "normal" in mind. I've seen them burn up from people simply tapping one line for a few additional LEDs.

I also advise against anyone trying to use the stock dimmer's output (white wire w/ green stripe) to power and/or control EL gauges. There have been a few different revisions of the internals of the dimmer, none of which can support a much heavier load. Additionally about half the dimmer's I've see supply a gradiated ground and the others supply a gradiated positive signal (these are a potential divider. Simply put, if your ground is at 2v and your + is at 12v the circuit in between actually sees 10v.). Also, if you've got the latter of the two the scale is the opposite. A light fed a + from the w/g wire will brighten as the rest of the gauges are dimmed.

A further reason not to use the dimmer's output as a positive signal is that you may create a low resistance ground path for the rest of the gauge lighting and the dimmer. Depending on which type of dimmer you have you can damage the dimmer or the newly added device.

To wire them to come on with the taillamp circuit supradaddy0803 is right, use the solid green wire which supplies the dimmer for your positive and the white wire w/ black stripe for the ground.

gpgtp_22 · 07-15-2007, 05:18 PM

Yea that is a better idea

07-12-2007, 10:20 PM	#1
zuni 3" Exhaust Join Date: Jun 2007 Location: Rockford, illinois Posts: 55	i need some electrical help fast please!! ok i bought these reverse glow gages i got them all put in the correct slots. now i need to hook the power wire and the ground wire up. my question is can i just tape into the back of the gauge cluster and use one of the ign+ screws and which one would the ground be. i want to be able to use the factory switch to turn them on so if someone can help me please do. these didnt come with any god damb instructions so im at a stand still. http://www.originalskintattoo.com/carpic/a.jpg http://www.originalskintattoo.com/carpic/b.jpg http://www.originalskintattoo.com/carpic/c.jpg Here are some pictures if you need to see what im talking about. thanks a bunch __________________ Zuni www.myspace.com/toxicskin www.originalskintattoo.com

07-13-2007, 01:14 AM	#2
supradaddy0803 12psi boost Join Date: May 2006 Location: Athens, TX Posts: 308	If you hook up the light wires to the dimmer switch they will turn on when you turn the lights on. The wire you are looking for on the dimmer switch plug is the white with a green stripe. Just go buy some inline splices and splice into that waire and they will light up with the headlight switch. But as for power for the gauges themselves the best way is to tap into the gauge circuit fuse off of the wires on the bakc of the gauge cluster because tieing down to the board on the back of the gauge cluster might have bad consequences. if you short something then everything will go out. any power source that comes on with the key is good like the EFI fuse it is 15 amp and that is what I have my tach tied into. __________________ 1987 supra NA 5 speed 1JZGTE swap Tokico Illumina 2 and Eibach springs Tokico pillow blocks Suspension Techniques front and rear sway bar HKS super dragger cat-back exhaust plus test pipe Greddy Profec B spec 2 boost controller HKS type 1 turbo timer Supra sport solid steel drive shaft Walboro 255 fuel pump JZA70 Front end mod 18" Volk Racing AV3 18x8.5 front 18x9.5 rear Last edited by supradaddy0803; 07-13-2007 at 01:19 AM.

07-13-2007, 01:42 AM	#3
zuni 3" Exhaust Join Date: Jun 2007 Location: Rockford, illinois Posts: 55	all i need is a power and a ground the gauges come with its own dimmer switch i just need to hook up 2 wires. a red and a black. but i need to find where to hook them up so that when i turn on my lights the gauges will turn on. im confused a little about what i should do. __________________ Zuni www.myspace.com/toxicskin www.originalskintattoo.com

07-13-2007, 07:17 PM	#4
supradaddy0803 12psi boost Join Date: May 2006 Location: Athens, TX Posts: 308	Ok if you want them to come on when you turn on your head lights then hook them to your dimmer switch the reason for this is it gets its power only when the head lights are on. I was wrong before though hook the red wire to the solid green wire on the dimmer switch this will allow for when you turn on your head lights the lights on the gauges will come on. If you want the lights on the gauges to comeon all the time as soon as you tunr on the ignition then hook into your EFI fuse then when you turn the key the fuse gets hot and the lights will come on. I hope this helps if you have any more questions then post away. __________________ 1987 supra NA 5 speed 1JZGTE swap Tokico Illumina 2 and Eibach springs Tokico pillow blocks Suspension Techniques front and rear sway bar HKS super dragger cat-back exhaust plus test pipe Greddy Profec B spec 2 boost controller HKS type 1 turbo timer Supra sport solid steel drive shaft Walboro 255 fuel pump JZA70 Front end mod 18" Volk Racing AV3 18x8.5 front 18x9.5 rear

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07-13-2007, 09:06 PM	#5
gpgtp_22 3" Exhaust Join Date: Jan 2006 Location: Wisconsin Posts: 80	if you want to tap into the back go to ign+ and earth that would be your ground or ign- should work the same too

07-14-2007, 07:31 AM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I wouldn't recommend powering the EL inverter via the soft circuit on the back of the cluster. They're old, and were only designed with a certain tolerance above "normal" in mind. I've seen them burn up from people simply tapping one line for a few additional LEDs. I also advise against anyone trying to use the stock dimmer's output (white wire w/ green stripe) to power and/or control EL gauges. There have been a few different revisions of the internals of the dimmer, none of which can support a much heavier load. Additionally about half the dimmer's I've see supply a gradiated ground and the others supply a gradiated positive signal (these are a potential divider. Simply put, if your ground is at 2v and your + is at 12v the circuit in between actually sees 10v.). Also, if you've got the latter of the two the scale is the opposite. A light fed a + from the w/g wire will brighten as the rest of the gauges are dimmed. A further reason not to use the dimmer's output as a positive signal is that you may create a low resistance ground path for the rest of the gauge lighting and the dimmer. Depending on which type of dimmer you have you can damage the dimmer or the newly added device. To wire them to come on with the taillamp circuit supradaddy0803 is right, use the solid green wire which supplies the dimmer for your positive and the white wire w/ black stripe for the ground.

07-15-2007, 05:18 PM	#8
gpgtp_22 3" Exhaust Join Date: Jan 2006 Location: Wisconsin Posts: 80	Yea that is a better idea