355 Switch modification.

So strange, another seller has a F50 lift switch with the correct graphic, but it's only moving one way...

 

Are there any Ferrari switches which latch in two positions? Is your F50 switch momentary or does it latch?

Is your lifting system designed to have a 3 position/latching switch?

 

For clarity: I mean "latch in two positions away from centre".

Dave from StickyRx thinks the F5o switch is most likely like a window or roof switch, but he doesn't have one at hand at the moment to confirm.

 

I don't have the lift system yet (I have ordered it 10 days ago), but it seems to me that I need a switch like a window switch: UP/DN (I made a previous install on another car with variable suspension and this is what I used to activate the system UP and DOWN. No reason it will be different on this system.
OCKlasse said the F50 lift switch is operating the same way, but a seller told me his brand new F50 lift switch move one way only (I don't know if it latch or just momentary) . I doubt there is 2 different lift button for the F50, but who knows...

 

We have boxes full of switches

 

Does the spider roof switch is a 2 way momentary switch like the ones for moving the seat ?

 

Yes.

 

Thanks for the confirmation

Qavion, I think you have many electric circuit diagrams. Do you have the one concerning the central locking from a 97 355?
I plan to use one 2 way momentary switch to replace the 2 actual switches but I'm not sure how to modify the wiring...

 

Assuming a 5.2 car...

https://www.dropbox.com/t/j4xCyh4fn2vTLhjj

There are a few notes written on the diagram which may help you understand the operation.

 

Great! Thank.
Now I need to study that...

 

The roof switch wiring is slightly strange. With the switch in the neutral position, for some unknown reason, power is sent to the roof ECU on pin 1. When the switch is activated (up/down, the roof ECU receives an earth on pins 1 or 2. I don't know if this voltage will be a concern when using a roof type switch for the door lock/unlock system.

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The roof switch diagram (right side) shows the switch socket numbering (not the switch pin numbering). i.e. looking at the metal contact side (not the wire side). Reverse the image to show the switch numbering.

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Interesting.
Do you have the diagram of the seat switches and of the window switches too?

 

Internally, they should be the same as the roof switches. They are drawn the same in the wiring diagrams.

 

OK, but I would be interested to see how they're connected to the motors.

 

Seat/Roof diagram:

https://www.dropbox.com/t/TWOMEjDsSsgHzhMG

Window diagram:

https://www.dropbox.com/t/qQiCnaye3pdMofFb

Slightly different external wiring. I don't know why there is a signal loop through both switches when the switches are not used.

 

what a great idea. can you send a link to the kit you ordered and let us know how it goes?

 

@judd10 I will do a full article about my Lift installation when it will be done, I promise.

Thank you very much Qavion.
For replacing the 2 central locking swiches by one, I thing it seems to complicated for me and I should check with an auto electrician.
(I have a plan B to get a free space for my lift switch: removing the "sport" switch from the console and left it connected underside: after all I never use it)

I have worked mainly on pre-ECU cars, so this was simpler, but if I recall correctly on my previous variable height suspension install, I used a window switch with one wire coming from UP pin to the relay of the motor pump solenoid, and one wire coming from DN pin to the relay of release valve.
That was simple and I hope those F355 switches could act the same way without being connect from any ECU.

 

Hi,
I just received a second hand roof switch.
So, you said the pin 3 is sending a + to open and the pin 5 is to close.
And you said ground on 1 or 2?

When looking at the diagram you gave me (thanks again!) it looks somehow different for me but maybe I'm totally wrong.
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It seems to me the pin 5 and 3 receive the +, pin 4 ground, and pin 2 send + to open and pin 1 send the + to close.

What do you think about my interpretation of this diagram?
Thanks.

 

Just to clarify, the graphic of the plug shows the face of the connector with the wires on it, not the switch.

With the switch removed, do you get 12 volts between either of the outer sockets of the connector (i.e. sockets 3 & 5) and connector socket 4? i.e. with the ignition turned on? i.e. with a voltmeter, do you get 12 volts across 3 & 4 (and across 5 and 4?). This is for measurement purposes only, not for normal switch function. The green/white wires are the power wires. Grounds on Ferraris are almost always black. You may get a permanent roof buzzing sound with the switch disconnected (don't panic).

As I understand it, power goes to switch pins 3 and 5 on the green/white wires from the AC System fuse. With the switch not activated, this power goes through the switch contacts to the ECU on the green/yellow wire and the purple wire.

With the switch not hooked up or moved away from the centre position, is there continuity between your switch pins 2 & 5 (and between 1 & 3?). Or are you getting continuity between switch pins 2 & 4 (and 1 & 4)?

 

I just realised that parts of the OEM graphics can be quite confusing.

Here are some individual diagrams showing switch operation...
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It's confusing because power is sent to the ECU on both B03 and B06 when the switch is not moved. I assume this is some kind of safety or self checking feature. When the switch is activated, the power on one pin is removed and replaced with an earth.

I probably should have removed the backlighting LED for clarity. Just ignore it

 

Thanks, but it is very confusing for me.
I got this switch to have an OEM switch to control my lift kit (it is provided with a remote, but I would like a wire connected switch).
So this switch will not be connected to any original ECU.

All I need is to send a + when UP position, and another + from DOWN position, and of course getting the light ON with other switches when turning the lights ON.

Looking at your diagrams, I understand that pin 1 and 2 revert positions when activated, but send + on both wires when left at neutral position?
Is that correct?
If it is I'm in trouble...

 

(EDIT: standby... I'll draw a diagram for you)

 

Great thanks

I'm checkin continuity.
Switch in neutral position: continuity between 2-5 and 1-3
No continuity between 2-4 or 1-4

Switch DOWN: continuity between 2-4
Switch UP: continuity between 1-4

 

I see what you mean. Does the voltage go straight to some kind of lift ECU or to relays?

 

Thanks for the confirmation. I know I've checked this a few times, but it's good to have confirmation.