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Discussion Starter · #1 ·
Ive been looking all day and all the thread i came across don't really give you a direct way to install (i have a Garrett mechanical boost gauge has red black and orange) red being 12v ignition black ground orange 12v constant) I'm not sure where to tap into under the hood, and or where to wire anything to i haven't done one before and don't wanna mess anything up any help would be awesome.

found these ones and dont give me much:
http://www.saabcentral.com/forums/showthread.php?t=183225
http://www.saablink.net/forum/customizing-your-ng900-old-9-3/22071.htm
http://photo.platonoff.com/Auto/20040417.Saab_9-5_boost_gauge_install/
 

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Ive been looking all day and all the thread i came across don't really give you a direct way to install (i have a Garrett mechanical boost gauge has red black and orange) red being 12v ignition black ground orange 12v constant) I'm not sure where to tap into under the hood, and or where to wire anything to i haven't done one before and don't wanna mess anything up any help would be awesome.

found these ones and dont give me much:
http://www.saabcentral.com/forums/showthread.php?t=183225
http://www.saablink.net/forum/customizing-your-ng900-old-9-3/22071.htm
http://photo.platonoff.com/Auto/20040417.Saab_9-5_boost_gauge_install/
I installed mine where the headlight switch is, for power I put a spade blade on the positive wire and ran it to the fuse panel on the side of the dash. I found an unused fuse that was switched so I used that. Ground wire went to the grounds that are right behind the fuse box there, if you look you will see what im talking about. I followed the last link when i installed mine
 

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So would I hook the 12v power and 12v constant to the same ?
the constant must be cause you have a memory function on your gauge, if yuou dont care about recaling your highest boost you can tie them together. otherwise just tap into something that always has power and the other to a switched source
 

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Discussion Starter · #5 ·
Ok, the install instructions tell me that the red is 12v ignition and the orange is 12v lighting does that make a difference ?
 

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Ok, the install instructions tell me that the red is 12v ignition and the orange is 12v lighting does that make a difference ?
ok then you can tie them to the same source, or you can put an inline switch in to turn the light off, or as some have done tied it into the dimmer so you can dim the light.

Kinda wish I tied mine to the dimmer cause its way bright at night
 

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Discussion Starter · #9 ·
:confused: not sure, havnt even tried to see how others have done it cause it seemed like too much a hassle for me at the time, but now i wanna know too

This site will help with the dim switch http://www.saablink.net/forum/custom...-9-3/22071.htm

Now for wiring.

The best choice for wiring your gauge would be to tap into a dash switch back light. You want to do this so your gauge will dim along with the other lights on the dash.

You want to find the GREY and WHITE wire on the back of a switch
 

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This site will help with the dim switch http://www.saablink.net/forum/custom...-9-3/22071.htm

Now for wiring.

The best choice for wiring your gauge would be to tap into a dash switch back light. You want to do this so your gauge will dim along with the other lights on the dash.

You want to find the GREY and WHITE wire on the back of a switch
Thanks, gonna change mine on my day off so I can dim it with the other lights
 

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Discussion Starter · #12 ·
when i use the last link to do the vacuum lines, kinda confused on how to run them (i dont have a sending until to install) just dont wanna mess up the lines
 
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