Alan

Jay - that timing is fine - thanks!
Alan

antsmands

I can back up Fogey1 for the US83 if needed.

Alan

Sounds good to me - add yourslef to the list & repost it. Thanks!

Alan

Alan

Notes on pending (and some implemented) changes to the diagram sets. I will update just this post with the latest details,

please check here against any anomalies you find. I will identify when this post has been updated significantly with a new

post linking this (#94).

(X = Already integrated into published diagrams)

Base Diagrams:
==============
1977-1979:
X Added Fuse in/out label detail next to diagram fuse row
X Added labels to Relays, Fuses & Plugs
X Changed from Blue to Green borders for interchangeable relays
X Darker Grey fill for unused relays
Add CE Panel Part#
Add note on Relay socket terminal ID - orientation on panel varies from 0 to 90 degrees clockwise/counter-clockwise
Add note on Relay sockets VIII & XVIII - these use wider 30/87 terminals (VIII never used) - In: 1977-1980w/
Unused Fuses have grey fill & crossout indication (Vs. "-") - to better match unused relays
Fuses now use darker Red & Blue to better match actual (typical) fuse body colors
I am changing terminology for correctness: I will now use 'Panel Connectors' & 'Loom Connectors'
Unused panel connectors have grey crossout indication - to better match unused relays/fuses

1980-1984:
X Added Fuse in/out label detail next to diagram fuse row
X Added labels to Relays, Fuses & Plugs
X Changed from Blue to Green borders for interchangeable relays
X Darker Grey fill for unused relays
Add CE Panel Part#
Note on Relay socket terminal ID - orientation on panel varies from 0 to 90 degrees clockwise/counter-clockwise
Fuses Use a darker Red & Blue to better match fuse body colors
Unused fuses have grey fill & crossout indication (Vs. "-") - to better match unused relays
I am changing terminology for correctness: I will now use 'Panel Connectors' & 'Loom Connectors'
Unused panel connectors have grey crossout indication - to better match unused relays/fuses
Add color coding to the CE panel connectors

1985-1995:
Relay Label IXX corrected to XIX
X Added Fuse in/out label detail next to diagram fuse row
X Added labels to Relay & Plugs
X Changed from Blue to Green borders for interchangeable relays
X Darker Grey fill for unused relays
Rotate the numeric labels on all fuses in diagram section by 180 degrees
Add CE Panel Part#
Rotate relay base diagram by 90 degrees clockwise to match the default install orientation
Note on Relay socket terminal ID - orientation only on double relays is 90 degrees counter-clockwise
Updated generic fuse detail: color of arrows positions/sizes & top label 'ATO/ATC Fuses'
Moved position of the Fuse Input Bus detail to just above the fuse (more consistent with earlier panel diagrams)
Unused Fuses have grey fill & crossout indication (Vs. "-") - to better match unused relays
Unused panel connectors have grey crossout indication - to better match unused relays/fuses
Add color coding to the CE panel connectors

Relays Superseded:
==================
928.615.119.00 -> [928.615.119.00 S:928.615.119.01] - In: 78-79 XIII, 80-84 XVI
928.615.126.00 -> [928.615.126.00 S:928.615.126.02] - In: 85-88 VI
928.618.113.01 -> [928.618.113.01 S:928.618.113.02] - In: 78-79 XX,80-84 XV, 85-91 IX
928.615.124.01 -> [928.615.124.01 S:928.615.124.03] - In: 87-88 XVII
928.618.108.00 -> [928.618.108.00 S:928.618.108.01] - In: 89 XV, 90-93 VII


Relay Mistake Fixes:
=====================
928.614.124.01 -> 928.615.124.01 All
928.614.124.03 -> 928.615.124.03 All
'Starter' -> 'Start' Disable - In: 77-79 XV, 80-81 XIV - Name change only - other details OK - function for these years is

different
Starter eliminate bridge (M:928.615.125.00) M & A Use 928.615.117.00 - In: 82-84 XIV
Original Flasher relay =*111.953.227.D (S:1H0.953.227) In: All Years
Flasher relay for trailer = Tow: 928.615.131.00 In: 1985-1995


Relay Name Fixes"
=================
VIII Should be: 'USA/JPN Foglights' (ROW is a 30/87 bridge) - In: 1991-1995

Relays General Notes:
=====================
928.615.117.02 - Can use a 141.951.253.B instead
928.615.203.00 - Can Replace with a 141.951.253B (same function without fuse test)
141.951.253.B - Can Replace with 928.615.203.00 fuse tester any place 53B is used

Fuses:
======
Fuse 7: Not Used -> Fuse 7: Brake Lights, Cruise Control - In: 1981-1982
Fuse 10: Brake Lights -> Fuse 7: Not Used - In: 1981-1982
Fuse 17: Should be 'Alarm System, Underhood Light' - In: 1991-1995
Fuse 22: Not Used -> Fuse 22 Fuel Pump, Aux Air valve, WUR - In: 1983
Fuse 13: Fuel Pump, Aux Air valve, WUR -> Fuse 22:Not Used - In: 1983


Unresolved WIP:
===============
Early 80 to 86 light double relay = 928 618 107 00 & 928 618 107 02 (WHEN?) and both SS to 928 618 107 05


XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

XXXXXXXX

ROW WIP:
========
UK (dim/dip) double relay 928 618 107 01 only used 87 to 90. Later cars used 928 618 107 04

Raw Comments Pending:
=====================

From jp: re: euro '83
If I use your 82 chart for my 83 Euro and compare to my owners manual, the only differences are fuses 19 (headlight pod)

and 22 (fuel pump, AAV, WUR) are listed as 16A , not 25A. I have done a few years with a 16A on the pump with no issues -

measured pump current ~7A.

That means basically that F7 and 10 swap (brake lights,cruise swap with Not used), and 13 and 22 swap (fuel pump and Not

used) from 82US to 83Euro.
The relays are OK for both AFAICS.

From DaveC: re USA'93

Mirror switch is on a different fuse - according to the diagrams - depending upon memory or no-memory.
For seat/mirror memory it's on fuse 25 (not 40.)

Differences from CEL card:
Fuse 17: add Alarm and Turn Signal (switch I assume, but not shown in WSM)
Fuse 25: clock and diagnosis circuit

Differences from WSM:
Fuse 10: add stop light switch
Fuse 17: add Alarm
Fuse 27: Hazard and Turn Signal Switch(es)
Fuse 41: clock (yes, another one, and no, the bulb feeds through dimmer)

General Notes for my Ref:

CE socket receptacle flange (console for Chime etc) 928.615.511.00

CE Panel Type Detail:
========================
928.610.105.00 1977-1978
928.610.105.01 1978-1979 (Changeover# ?)
928.610.105.03 1980
928.610.105.04 1980-1981 (Changeover# ?)
928.610.105.05 1982 USA, 1983 USA Manual
928.610.105.06 1982-1983 ROW, 1983 USA Auto
928.610.105.07 1984 USA/Japan
928.610.105.08 1984 ROW
928.610.105.09 1985, 1986 up to 98GS8 60999
928.610.105.13 1986 from 98GS8 61000
928.610.105.16 1987-1988
928.610.105.17 1989
928.610.105.19 1990
928.610.105.22 1991
928.610.105.23 1992-1993
928.610.105.24 1994-1995

S-Program 1993 is like 1993
S-Program 1994 is like 1993

928.610.105.00 -> 928.610.105.03 (1977-1980) Panel sockets: all white - Color sequence on plug of Yellow->Blue->Red-
>White->Black (repeat from A-Z)

928.610.105.00 -> 928.610.105.04 (1977-1981) have larger (high current) 30/87 terminals for Relay sockets VIII & XVIII
However only relay 928.615.111.00 (AC Condenser) is used in XVIII (VIII always empty 77-81)

928.610.105.04 -> 928.610.105.08 (1980-1984) Panel sockets & plugs: Color sequence of Yellow->Blue->Red->White->Black

(repeat from A-Z)

From 1977-1984 unused CE plug terminals on the panel may not be populated
1985-1995 Panel sockets & plugs: Color sequence of Yellow->Blue->Pink->White->Black->Brown->Green (repeat from A-Z)
1985-1995 Also have a physical interlock coding mechanism that prevents a color matched plug from being plugged into the

wrong socket.

Connector | Coding Shell color | [left 11-15 terminal holder, right 21-25 terminal holder]
======================================================================== ==================
A Yellow [Black, Black]
B Blue [Black, Black]
C Pink [Black, Black]
D White [Black, Black]
E Black [Black, Black]
F Brown [Black, Black]
G Green [Black, Black]

H Yellow [Red, Black]
J Blue [Red, Black]
K Pink [Red, Black]
L White [Red, Black]
M Black [Red, Black]
N Brown [Red, Black]
O Green [Red, Black]

P Yellow [Black, Black]
Q Blue [Black, Black]
R Pink [Black, Black]
S White [Black, Black]
T Black [Black, Black]
U Brown [Black, Black]
V Green [Black, Black]

w Yellow [Red, Black]

From 1985-1995 unused CE plug terminals on the panel are ALWAYS fully populated


Available Plug sockets with no terminals used [25% or less terminals used]:
928.610.105.00 (1977-1978) - R, W, X, Y (+Z w/ no-alarm)
928.610.105.01 (1978-1979 Changeover# ?) - R, W, X, Y (+Z w/ no-alarm)
928.610.105.03 (1980) - R, X, Y (+Z w/ no-alarm)
928.610.105.04 (1980-1981 Changeover# ?) - R, X, Y (+Z w/ no-alarm)
928.610.105.05 (1982 USA, 1983 USA Manual) - R, X (Y?) (+Z w/ no-alarm)
928.610.105.06 (1982-1983 ROW, 1983 USA Auto) - R, X, Y (+Z w/ no-alarm)
928.610.105.07 (1984 USA/Japan) - R, W?, X Y? (+Z w/ no-alarm)
928.610.105.08 (1984 ROW) - R, W [+ Y for non ABS] (+Z w/ no-alarm)
928.610.105.09 (1985-1986 up to 98GS8 60999) - N (+V if not equipped with trailer harness), [V]
928.610.105.13 (1986 from 98GS8 61000) - N (+V if not equipped with trailer harness), [V]
928.610.105.16 (1987-1988) - L, R [N]
928.610.105.17 1989) - [N]
928.610.105.19 (1990) - R
928.610.105.22 (1991) - R
928.610.105.23 (1992-1993) - R
928.610.105.24 (1994-1995) - R

Unused panel connectors will have no matching loom connector shell
Partially panel connectors will have a loom connector plug with open terminal slots (many are like this)
Every year has a large number of individual unused terminals (between unused and partially used panel connectors)


Relays not on CEP
=================

ABS Relays on Hydraulic Unit

ABS Activation Relay (mounted on ABS Hydraulic Unit)
928.618.931.00 = Bosch #:0332205003 (5 pin) - In: 84 to 87
928.618.931.01 = Bosch #:0332205004 (6 Pin) - In: 88
928.618.931.02 = Bosch #:0332002173 (7 pin) - In: 89 to 95

ABS Pump Relay (mounted on ABS Hydraulic Unit)
928.618.930.00 = Bosch #:0332002176 (4 pin) - In: 84 to 87
928.618.930.01 = Bosch #:0332002171 (4 pin) - In: 88 to 95

Mini relay in HVAc Head unit for AC mode:
1977 - 1983 Gruner: 175.B.02.100D or Siemens: V23027 SPDT (only SPST functions used)
1984 - 1995 Gruner: 202 DPDT (only DPST functions used)


Relevant Threads:

This one: https://rennlist.com/forums/showthre...eferrerid=6055
Owner Help Request: https://rennlist.com/forums/showthre...eferrerid=6055
Generic Relays Qns: https://rennlist.com/forums/showthre...eferrerid=6055
HVAC Relay: https://rennlist.com/forums/showthre...ferrerid=6055C

Original One: https://rennlist.com/forums/showthre...eferrerid=6055


Alan

Alan

Another note:

Some have identified that I use different descriptions for fuse & relays. This is certainly true for all years and quite deliberate.

The reasons are:

1) Brevity - these need to fit in limited space - so must be more concise
- In a list of Relays there is little point in adding 'Relay' to a description as other sites do (Porsche did this is early diagrams)
- Ditto fuses
- If a shorter name is clear - I will use it
- In a list of similar items I simplify : e.g. of lighting (I will say 'lights' only once)

2) Consistency - I want changes YTY to be clear - if the function didn't change the name shouldn't
- Porsche changed names of the same functional item over the years for some strange reason

3) Clarity - Name of relays should map logically to their functions
- Porsche sometimes used meaningless names
- Porsche occasionally actually used misleading names

What is the result of this? You will see differences, my names will mostly be shorter, but similar, generally easy to match to the original. In a few case I depart because Porsche was just too missleading...

Don't flag all these to me - only flag the ones where the difference seems relevant/material.

If you can identify the CE panel # installed (embossed on the face at the top) that would also be helpful - I will publish this on the final diagrams.

A note here - It seems the wiring diagrams don't really relate to a model year (despire their labelling)- they actually relate to a specific CE panel ID (be nice if Porsche listed that ID) - now this usually does map directly to a single model year BUT NOT ALWAYS.

Eventually I will publish the panel ID that each diagram relates to on the diagram - this way you can be certain you are looking at the right diagram for what is installed in your car. I'm thinking as a result that I will certainly need two 1983 diagrams (for USA) to clarify this. I still need to do some checking on some 1978 & 1980 anomalies and on some possible 1993 and 1994 mid-year changes.

Alan

Landseer

Adding Landseer to USA 84 and Euro 84.

Landseer

Alan,

Am systematically working thru 84 diagram.

One immediate change needed though --- USA & Euro 84 --- Fuse position #19 --- Headlight motor
This fuse needs to be changed to 16A (initial draft of new diagram shows 25A)

Source --- WSM wiring diags, both Euro & USA Central Electrics pages.



Also --- Relay position XI This is anitlock for 84 cars. My Euro has this position filled because it has antilock brakes. It is empty for my USA 84 which does not have optional antilock. (initial draft of new diagram shows "unused")

Same source as above, plus, visual of my Euro 84 CE box.

Alan

Tally List (so far - add yourselves): (• = completed & FB recvd).

78 - LT Texan (Dan)
79 - ROG100 (Roger)
80 - Andrew Schauer (Andrew)
81 - Jeff Bowlsby (Jeff)
82 - ROG100 (Roger)
83 - Fogey1 (Will)
84 - yaskota (Tom)
85 - WyattsRide (Rick)
86 - neilh (Neil)
86.5 - Hernanca (Carlos)
87 - PRC928 (Paul)
• 88 - Martins (Martin) (CA)
89 - Bill Ball (Bill)
90 - Ed Scherer (Ed)
• 91 - rbrtmchl (Bob)
• 92 - the flyin' scotsman (Malcolm) (CA)
• 93 - worf928 (Dave)
94 - Gary Knox (Gary)
95 - <<<=======<<<

Other ROW cars:
78 - ROG100 (Roger)
79 -
80 - ROG100 (Roger)
81 - Vilhuer (Erkka)
82 - Dave928S (Dave)
83 - jp (John)
84 - neilh (Neil)
85 - Mrmerlin (Stan)/ Wisconsin Joe (Joe)
86 - heliflyer (Jay)
87 - Vilhuer (Erkka)
88 - ROG100 (Roger)
89 - Leon Speed (Aryan)
90 - Vilhuer (Erkka)
91 - Kiwi928S4 (Ken)
92 - Vilhuer (Erkka)
93 -
94 - Arnoud (Arnoud)
95 - Dave928S (Dave)

Alan

the flyin' scotsman

Alan.......CE panel ID on the '92 GTS is 928 610 105 23

My previous post referenced the part # of the CE panel diagram that's attached to the wood panel cover.

antsmands

Adds to 83US.

rbrtmchl

Alan,

On my '91 the CE panel # is 89 60 52. Is this the number that you are looking for?

Alan

No it should be in the format:

928.610.105.xx probably 928.610.105.22 for a '91

Look further to the right under the other mounting screw.

Nice that you still have the fuse puller there - most seem to dissapear even though they have a nice little 'home'.
Fill up the spare fuse slots for future convenience too...

Alan

Landseer

Alan

Added myself in post 96.

Please see also post 97 --- your 84 diagram has an oversized fuse for headlight motor.

Alan

Yes got it! - already updated in my version - Thanks for the FB.

Alan

LT Texan

Alan, warmer weather and a short to do list for the weekend means I can spend some quality time on this today.

This is such an amazing project.