Ok I got a HUD from the yard today and was looking for any info, wiring diagrams that may be available. I downloaded the 96 bon. diagrams but it seems to far different.

My pins are labeled and coloured as follows, well as far as I've figued out:

A - Brown/White (12v Ignition)
B - Black (Ground)
C - Brown (Dimmer?)
D - White (Display on/off)
E - Brown (Fuel)
F - LT. Blue (LH Turn)
G - Brown (Gauges)
H - Little Light Blue (km when grounded, default mph)
I - DK. Green (VSS connect to yellow wire)
J - DK. BLUE (RH Turn)
K - LT. Green (Highbeam indicator)
L - (empty or is that M???)
M - (non exsitant, although its labeled)

Dimmer side.

A - Ground (lamp)
B - Pink (English Metric Conversion?)
C - White (display on/off)
D - Ground
E - Grey (lamp Pos)
F - Brown/White

Any addition help would be great!

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1G2PG9799GP274113

[This message has been edited by David Bartlett (edited 07-22-2002).]

[This message has been edited by David Bartlett (edited 07-22-2002).]

[This message has been edited by David Bartlett (edited 07-22-2002).]

[This message has been edited by David Bartlett (edited 07-22-2002).]

Dude, I hope you sort this out, this is one of the single coolest mod ideas I've seen in a while.

If you don't mind; please keep my email and let me know what parts would be needed, and how you get it running. Thanks a ton!

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Rusty: '85 GT 4sp, blown motor, rusty chassis...parting out.
Eve: '84 Perfect California chassis, stripped, recieving all Rusty's usable parts and 3.4 DOHC swap!

Ok I got it running on my windsheild.. I figured out all the turn signals, gaguges, fuel, etc, but I havent got the speedopart to read anything higher then 0mph, not to mention get it into Km\h

HELP!

---off to do more research. Keep an eye out up top for updates.

You might want to check if the people on the GM ECM list (www.diy-efi.org/gmecm) have any info. I'd guess that one of those lines comes from the ECM or the VSS.

Here are the wiring diagrams you requested. Although these are for a '92 Prix, there should be no difference for the unit you possess. You may, however, run into an issue concerning the VSS output from your speedo head. The HUD needs to see a 4000 pulse per mile signal and I believe the Fiero speedo head outputs a 2000 PPM signal which will cause the HUD to display half your actual speed. A translator will fix this problem. One is available from http://www.autotransinc.com/recal.htm

Here are the links to the image files you requested:

Page 1 of 2: http://dtcc.cz28.com/images/HUD1a.jpg

Page 2 of 2: http://dtcc.cz28.com/images/HUD2a.jpg

Hope these help...

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1987 Pontiac Fiero Coupe #18,838
3800 Series II SFI
4T60-E Trans
3.33 Final Drive

1987 Pontiac GTA
5.7L SuperRam MPFI
4L60-E Trans
3.73 SRD

http://dtcc.cz28.com

[This message has been edited by SubZero350 (edited 07-22-2002).]

[This message has been edited by SubZero350 (edited 07-22-2002).]

Thanks for the posting! Actually I just figured them all out just before you posted. But it will help with others.

According to Oliver "This output is a sine wave of 4000 pulses per mile."

and the Haynes manual has it at 4000 Pulses per mile.

*** now my problem is that I can't get the speedo to output my speed. I unplugged the speed wiring connector, the one on the bottom and spliced in the Green wire on the hud to the brown wire on the connector. But nothing. Any suggestions?

I have the HUD on my 98 Grand Prix and I love it.

According to my notes when I was wiring in my custom gauges on my 85, the brown wire was the cruise. Looks like the yellow wire is to the VSS. I have a purple /white wire marked as "speedo", but don't remember what it's for (power maybe?). If you have an 84, the wiring might be different.

26km/h - thats the speed you have to be going to initialize it. hahah!! and its the yellow wire!

Heads up Display in a Day!! haha I pulled it from the yard, figured out the wiring with a little help and now I get to enjoy it! Thanks to all!

[This message has been edited by David Bartlett (edited 07-22-2002).]

You know we need pics

Thanks way too go.... GGRRRRRR now I want to do it.... Well I guess it is off to the junk yard after work.... again. I want to do too much. Pics would be great.

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85 GT 4 SPD
Accel 8mm wires
Accel 300+ Ignition box
K&N
Short Shifter
Coulee Region Fieros member

Hey Dave, This link may help some
https://www.fiero.nl/forum/Forum2/HTML/022694.html

And
http://www.MoreThanMeetsTheEye.com

Password is HUD

[This message has been edited by 84Bill (edited 07-23-2002).]

84 Bill, yea thats what I had to work with.. But it was different.

I'll post pics once I get it installed all nice like.

Hey, does anyone know if u could put ones of these into a DSM (ie. Talon, eclipse, or LASER). And what would be needed?

David ........PLEASE POST PICS.......I've GOTTA have one !!!!!!!!!!!

Phil

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GTDude
OVER 25 years GM experience

Hey guys, i found this company that makes huds. They have speedo/tach huds, and they even have a turbo boost Hud, that comes with a turbo timer too.
http://www.defi-shop.com/

not too pleased with the looks of those...rather have a used one off of a Grand Prix or Bonneville.

Phil

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GTDude
OVER 25 years GM experience