rbrtmchl

Picture attached. Alan, you are right, the CE panel number for my '91 is 928.610.105.22

Spider4me

A Great help to a new owner
Thanks

Kiwi928S4

Hi Alan
I have checked the CE board and diagram on the plywood cover on MY 91 RHD (ex Japan) and your 91 chart looks almost spot on. The only differences that i can see are:
Relay III (3) on my car is not used although the diagram calls it up as 'Daytime Running Light' so not sure if the relay has been pulled by PO?
Relay VIII (8) is labelled as 'Foglight USA/Japan' on my cover diagram (no mention of Alarm and Flasher).
Fuse 17 is labelled as Alarm System/Turn Sig. Funct. Engine Compartment Light on my cover diagram.
Relay XXII (22) is labelled as 'Ignition System' on the cover diagram.
Fuse 40 label doen not have the 'RDK' mentioned on my diagram.

The fuse ratings are as per your chart.

Do you want me to email the photos of my cover diagram and CE panel?
Regards

Ken

Alan

Ken - If you can confirm the panel ID that will be all else I need (it's under the RHS top mounting screw. Format: 928.610.105.??

III DRL is for Canada (and perhaps some Scandinavia) only. You shouldn't have it.
VIII - You are correct - 928 Specialist source error . (also true for '92-'95) will change to just 'USA/JPN Foglights' (correct description) - ROW is a 30/87 bridge
XXII is in fact correctly labeled for EZK (Porsche mistake in consistency)

Fuse 17 Should be 'Alarm System, Underhood Light' (also true for '92-'95)
- So somewhere in the middle here (the turn signals ref is only for the alarm system => misleading).
Fuse 40 with RDK is correct



Thanks for the FB!

Alan

Alan

Post #94 was updated with more pending changes

Alan

whatudrivin

You need another set of eyes on an '82 w/competition package?

Alan

Brad - see this thread - https://rennlist.com/forums/showthre...eferrerid=6055 - I'd be interested in getting more details on these electrical differences for another '82 (in general I think we have the rest of it...) - there just seem to be some anaomalies here between the car as built and some factory documentation - what can you add about yours?

Alan

martinss

Alan: I was able to look at my '90 S4 Euro in storage today. I had time to take pics of the CE and the panel card, and then review those when I got home (let me know if you want any of the pics). There are three fuse rating issues I noted. Here's my report:

1990 Euro (ex-Japan) S4
Confirm CE panel p/n 928.610.105.19
Confirm available plug is R (Pink)

Factory chart
Fuse nomenclature
#25 in addition to ‘Int. light & hatch release’ also shows ‘Diagnosis connect’ which is not on ACM chart
#40 does not show RDK – already noted as correct by ACM in post #109

Fuse sizing
#31 is listed as 25 (and installed) vs. 30 as on ACM chart
#39 is listed as 5 (and installed) not 7.5 as on ACM chart
#40 is 7.5 (and installed) not 5 as on ACM chart
-- Likely #39 and #40 inverted on ACM chart

Relays
All sockets used or unused as marked in ACM chart
All instances of 32B as noted (p/n visible on top of relay)
All other p/n codes not checked

Alan

Martin:

I'm changing:
#25 to read: Int. Light, Hatch Pulls, Diagnostic (30)
(hatch pulls is more accurate than hatch release due to fuse #26 function)
#39 switch to rating: 5A
#40 switch to rating: 7.5A

Not sure on #31 - USA Wiring Diagrams clearly show 30A (but it seems high) - any more USA 90 details anyone?

CE panel ID is as expected.

Thanks Alan

whatudrivin

I will get out to my car in the next day or 2 and get some pictures of the CE panel. I'm not sure if everything is correct on it as I have not restored it yet but will do what I can. And if I remember correctly my car was made mid year 82.

Alan

Post #94 was update with more completed / pending changes

Alan

Alan

Extent of relay and fuse changes YTY

Because I have all the data gathered here in a database it allows some interesting overall analysis: Whilst the underlying data has changed slightly since this was done (...so I will redo this at the end when it stablizes) - the general conclusions are still essentially valid.

I show 3 charts of YTY changes:

Relays (includes function AND part ID# changes)
Fuse Functions (includes major change or individual added/deleted items)
Fuse Ratings

In each case the colors show if that year changed from the previous year.

As you can see most years were just a few evolutionary changes however YTY between some years was massive 84->85 is the biggest due to the updated panel type , however 89->90 was also massive and all the years listed (as grouped) had some changes so no panels are directly compatible YTY between these groups. The final data may end up marginally different - but not by much. Don't use this in anger yet.

Alan

Ed Scherer

I just got done reviewing the materials for the USA '90.

First of all, thanks for your (and now, your volunteers') efforts on this. Very worthwhile, and the results are already fantastic.

Here is all I have to offer:

• Martin is correct (or at least my findings agree with his) related to the above, i.e., fuse #39 is 5 A and fuse #40 is 7.5 A, and this agrees with the card on the back of the CEL cover and what's installed on my car. Furthermore, fuse #31 is shown on the card on the back of the CEL as 25 A, and that's what's installed. The WSM diagram for this is apparently incorrect (it does show fuse #31 as 30 A).
• Fuse #11 (5 A) "Rear Fog Lights (ROW Only)" is installed on my USA '90.
• On my car, relay XXIII-XXIV is 928.618.107.01 (not ...04).
• On my car, relay XVII was originally 928.618.108.00, but was replaced with a 928.618.108.01 when I did the "dynamic kick down upgrade" a few years ago. That post shows both the old and new relays.

Everything else was consistent with the diagram you provided for the '90, updated by your comments in post #94 as of moments ago.

My car does have a variety of compatible relays in the 253.B positions, but that's probably not very relevant, other than perhaps it would be useful to have a cross-reference of the more common substitutes for the 253.B.

In case it's of use, here are photos of the CE panel 928.610.105.19 in my USA '90 S4, as well as the 928.610.320.00 card on the back of the plywood cover. Click the photos for the larger versions.

(And note that I've had the schematics for the '90 available for quite a few years.)

martinss

Ed: The CE panel card on my '90 Euro (Japan) is exactly the same as on your '90 US car - same p/n, and even stapled on exactly the same way

Thanks for the schematics too.

Alan

Ed think you mean: 928.618.108.00, but was replaced with a 928.618.108.01?

Alan