512 TR (KE Jetronic-no cat) Wiring Diagram Query

Hi folks, I've been trying to create some more legible wiring diagrams for the earlier Testarossas, which will be based on some not-so-legible diagrams I found online, but I keep coming across some irregularities in the diagrams. There may be errors in the Ferrari labelling (not uncommon) or there may be no errors at all, but simply a lack of knowledge on my part.

e.g. Relay "R", which is listed as the RH Fuel Pump relay, is hooked up to a pump marked "160" on the original diagrams. This decodes as "Electric Fuel pump cyl 7~12". Are cylinders 7~12 on the right hand side of the TR engine (going against the Ferrari "norm")? Or is the pump simply located on the opposite side of the car in relation to cylinders 7~12.

Here's one of the diagrams I've been working on...


512TR_Injection_System_Fig3

Thanks!
Ian

 

Here's another for the instruments...

Testarossa_Instrument Wiring Diagram

They are a work in progress. I'll modify them as more information comes to hand.

 

Excellent, thanks Steve!

It looks like I have something similar to the second pdf file. I just thought that these diagrams were hard to use. Some of the scans were made at different magnifications, so you can't get the 2 page schematic wires to line up.

Thanks... Just starting to learn about these cars. I've renamed them and will upload them in the near future.

It looks like the US cars are not too different from the Euro cars, so the diagrams should be relatively easy to modify.

Cheers!

 

Thanks guys, I appreciate the help. I've been producing coloured diagrams for Ferraris for various cars for a few years now and they seem to have helped owners from time to time. Some have been harder to produce than others. e.g. Ferraris like the 456 have no traditional wiring diagrams (at least not on CD), but Guido (relay panel manufacturer) produced a relay panel circuit diagram and I was able to incorporate that into some original diagrams based on plug pinout diagrams. Some diagrams will never be quite complete without pulling cars to pieces, ... e.g. mousetrack seatbelt diagrams, but from time to time, key elements are revealed by owners.

Here's what I have so far:

Testarossa_Airconditioning_Fig9

Testarossa_Injection_System_Fig3

Testarossa_Instruments

Testarossa_Mirrors_Wipers_Washers_Horns_Glovebox

TestarossaBatteryAlternator&StarterFig1

A few original Ferrari diagrams show two different wire colour codes on one wire, so that needs to be resolved at some point. When I get my hands on a Workshop Manual CD, I'll add mini graphics for the components for easier identification. Being in gif format, my diagrams can be modified with any free graphics program (e.g. Windows Paint). These diagrams are great for iPads as you can zoom and pan with ease.

 

Some more Euro Testarossa diagrams...

Testarossa Engine Ignition Control Fig2

Testarossa Door Locks, Electric Windows, Interior Lights and Radio

Haven't started the US versions yet... These diagrams are pretty hard on the eyes

Would anyone know the numbering (or lettering) of the 3 connectors on the bottom, left hand side of the relay panel? A-B-C (left to right)?

Image Unavailable, Please Login

Thanks!

 

Ooops... well-spotted. Thanks, Steve.

All links above now corrected (refresh browser as applicable).

I see battery terminals D & E are internally connected on the Testarossa, unlike the 550 where these feed specific fuses.

 

Ooops... another mistake. Thanks. I see the two lines from D and E do cross over in the diagrams, but they are not connected... Some of the original diagrams are harder to read than others

I've corrected the diagrams and am uploading them now....

On this topic, Guido, the gentleman who rewires the boards does join up the two battery terminals internally on his boards (or at least some of them), so you may find that some cars differ from others. I don't know if this is a good or bad thing.

 

I'll take back what I said... Some of them are really quite different. I've converted three of the relatively easier ones. The others could take a while.


Testarossa(USA)BatteryAlternator&StarterFig1

Testarossa (USA) Engine Ignition Control Fig2

Testarossa(USA) Wipers, Washers, Horns & Glovebox

 

That was my first thought. On cars like the 456M, it may not be as bad, as there are individual master fuses for the two battery connections. If the load on one branch gets too much, the fuse will (hopefully) blow.

Having isolated circuits would also be good for faultfinding. As you say, if half the car is working...

 

Folks... Here are some new links to the Euro Testarossa wiring diagrams (some new diagrams included)


Testarossa Battery Alternator & Starter Fig1


Testarossa Engine Ignition Control Fig2


Testarossa Injection System Fig3


Testarossa External Lighting Fig4


Testarossa Mirrors Wipers Washers Horns Glovebox Fig6


Testarossa Instruments Fig 7


Testarossa Door Locks Windows & Radio Fig8


Testarossa Airconditioning Fig9


And here are some links to some USA Testarossa diagrams (*** all new ***)


Testarossa (USA) Battery Alternator & Starter Fig1


Testarossa (USA) Engine Ignition Control Fig2


Testarossa (USA) Injection System Fig3


Testarossa (USA) Passive Seat Belts & External Mirrors Fig4


Testarossa (USA) Lighting Wiring Diagram Fig5


Testarossa (USA) Wipers Washers Horns Glovebox Fig6


Testarossa (USA) Instruments & Handbrake Fig7


Testarossa (USA) Door Locks Windows & Radio Fig8

Testarossa (USA) Airconditioning Fig9


Unfortunately, I can't change the message thread title to "Testarossa", rather than 512TR.

Hope you find them useful... Not that I would wish electrical wiring problems on anyone

 

Would you need Fig. 5, Romano? It's an external lighting diagram for the UK (Great Britain)

 

Not to offend UK citizens... I threw this together quickly...


Testarossa Lighting Wiring Diagram Fig5 (UK only

I'm not sure what the UK car does differently, but it has some extra "dim/dip" relays (and a modified relay "C" in the footwell).

 

Update:

Folks, I've just started looking at the real 512TR (Bosch 2.7) wiring diagrams (pdf format) and I see that some of them have missing sections due to either folds in the original paper diagrams or just poor scanning techniques.

e.g. 512TR Fig3 Bosch 2.7 Ignition/Starter Connections

The wiring in area between the relay panel and the connectors going to the Motronics ECUs and engine components is unknown.

I don't want to improvise too much when hooking up the wires. Would anyone have the missing pieces in this particular diagram? Or if someone has a pinout for the 2.7 Motronics ECUs, perhaps I can figure out the wiring from those.

Here is a 512TR instrument diagram which is mostly complete:

512 TR Fig6 (Instruments)

(just unsure of the wiring on relay panel plug "H").

Also, the workshop manual shows a different wiring relay panel to the panel shown in parts manuals. Would anyone have a photo of the real 512TR (2.7) relay panel? Google throws up dozens of completely different images.

Thanks!

 

And here's a mostly complete airconditioning diagram for the 512TR...

512TR Fig8 (Airconditioning)

I've noted discrepancies between the wiring diagrams relating to airconditioning in different parts of the workshop manual

 

And here's a diagram for the 512TR (Bosch Motronic 2.7) right bank injection/ignition system (Bosch 2.7)

512 TR Ignition/InjectionMotronic 2.7 (cyl. 1~6)


Unkowns:
Ferrari have a habit of not numbering their spark plug and injector component numbers in sequence on the diagrams, so you don't know which is spark plug 1, 2, 3, etc. I guessed the spark plug wiring (based on a Ferrari 550 which has a "wasted spark" system coupling outboard and inboard pairs of spark plugs)

 

A few more 512TR diagrams...


512 TR Ignition/Injection - Motronic 2.7 (cylinders 7~12) Wiring Diagram

512TR Fig4 Lights (Side, Turn, Hazard) Wiring Diagram

A few unknown components in this diagram

512TR Fig.5 Lights (Headlights, Fog, Brake) Wiring Diagram

I found a wire missing in the fusebox of all my 512 TR diagrams which I have now corrected, so I suggest downloading the latest ones (using the old links) if you previously downloaded them.