993 gauge wiring help

[siverson]

Hi,

Anyone have a reference for a 1997 993 gauge wiring diagram? I'm installing a 1991 964 engine in my 914, but the oil pressure/temp, tach, and speedo are from a 1997 993 and the wire colors seemed to have changed between 1991 and 1997. This is what I have so far (not much!):

oil temp:
BN/BL
WT/GN
BN
GN/BK - oil
WT/BL
OR/BN
BL/BN

oil pressure:
GN/RD - gauge needle
GN/RD - gauge light
YL/BN
BN/WT
GN/GY
BL/GY
OR

speedo:
OR
GN
BN
BL/GY
WT/RD

I really the need the GNDs, +s, check engine light, and the gauge illumination wiring.

Thanks for any tips (or links to the wiring diagrams).

-Steve
iverson@914-6.com

[CBRacerX]

I look forward to the answers on this!

[siverson]

Me too!

[maxnine11]

Steve, just sent you an email (to address in your signature).
I'm easily confused by wiring diagrams, but.....i CAN operate my scanner
max

[siverson]

Thanks to maxnine11, I think I'm a little bit closer. I just did some more digging on the diagram he sent, and this is what I have so far. I'll try wiring things up tonight, and let you know if it works!

For those interested in the file (1.05 MB JPEG file):

http://www.streamload.com/steve/merge4wireSmlr.jpg

My rough notes trying to debug the wiring for a 1997 993 oil pressure/temp guage and speedometer for use in an early car:

oil temp:
GN/BK - oil temp needle
OR/BR - "central warning light" (check engine?)
BR - GND
BR/BL - ?
WT/GN - ?
WT/BL - ?
BL/BR - ?

oil pressure:
GN/RD - oil pressure needle
GN/RD - oil pressure light
BR/WT - parking brake light (on central informer)
GN/GR - malfunction indicator (check engine?)
BL/GY - +12V for lights (entire gauge)
OR - +12V switched (I think; goes to junction 10)
YL/BR - ?

speedo:
GN - needle (31b) speed signal (on central informer)
OR - needle (15) +12V switched (?; goes to junction 10 too)
WT/RD - needle (A) +12V constant (?; goes to junction 9)
BR - GND
BL/GY - lights


NOTES:

OR might be +12V switched or GND, not sure... (I'm thinking +12V switch)?

It looks like the guages share some inputs (i.e. their are seperate plugs for the oil pressure and oil temperature, but there is only one BL/GY that controls the lights for the entire gauge (confirmed), and just one BR (GND for the entire gauge).

oil pressure gauge has inputs of:
GN/RE
BR
OR

oil temp gauge has inputs of:
GN/BK
BR
OR