Rear view camera reverse switch wire

Purple? Which car? F430?

There is a black wire with a purple tracer on relay PSR2, but that is a fixed earth. It doesn't switch when reverse is selected. There are no purple wires, only various types of red wires (red/red-green/red-black)

Did the camera system come with a wiring diagram? I would need to know how the camera is triggered (with an earth or a voltage). The F1 TCU provides a voltage to the relay coil, but you would want to make sure the voltage was sufficient to activate both the camera system and the relay coil.

 

Just fitted one in my 430, you just pick up the supply from the wire where it goes into one of the reversing lights. Connect the earth to one of the fixing studs. All under the rear wing

 

I added one to my 430, I used power from the reverse tail light.

 

I'm surprised it doesn't affect the brightness of the lights

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They use very little power, but it would only effect the load (amps being pulled on the circuit) not the voltage, so brightness is the same. I looked at several different cameras, and the install instructions on all of them recommended using the reverse light as the power source... seems like it must be pretty common to wire this way.

 

Unless you have a reversing camera the size of a box brownie it will be fine, only take a few watts.

 

Ah, that brings back memories... My first camera

 

Yes but what were you taking pictures off, god you must be old if that was your first camera. !!!!

 

If like the 430, take the light fitting out and find the contact for the reverse light bulb with a multimeter, then find the right wire on the wiring harness. Use a lucar crimp connector to pickup the power

 

The Box Brownie series went until '86 (according to Wiki), but I had a hand-me-down earlier version as a schoolchild. But, yes, some folks might call me old

 

The PSR2 relay is only applicable to the 430. On the 360, you would be looking for relay 96 behind the left hand seat.

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Consult your owners manual for the correct relay number, but the physical location should be the same (as 96 above). 70 is the fuse. The correct wire to tap would be a red wire with black tracer, but I think you would have trouble accessing the rear of the relay socket. As suggested, look for wiring closer to the lights themselves.

The last disconnect plugs before the plugs on the lights themselves are shown here:

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Looks like they are under the light assemblies. The harnesses are probably sealed, so you'll have to figure out how remove the coating. The red/black wire is power only. I assume you also have the task of running the video cable back into the cabin (or does the camera have some kind of wireless transmitter on it?)

 

The black wires in plugs "35L/36L" and "12L/22L" are the earth wires for all the tail lights, but any good chassis earth should be ok for the camera. For reference, the black wires are attached to earth lugs 34L and 11L (on the applicable side of the car).

 

if you are going to use the reverse light you don't need to locate the relay, you connect to the wire coming out of the light fixture in the back of the car.

 

Use one of these to pick up the voltage
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Hello all, I have a 2003 360 Modena with the F1 transmission. As I install a new CarPlay radio, I’m also installing a back up camera which will mount behind my license plate frame. I found a tutorial on here that explains how to run the wire from the front radio to the back of the car.

However, my license plate camera has the reverse trigger wire in front where the video RCA inserts into the radio. Not in the rear by the tail light.

So my question is, where do I find a reverse circuit close to the front, near the center dash?

Could I tap in to a wire attached to the F1 reverse lever in the console? That would be the easiest and shortest run to install a reverse trigger wire if that were possible.

I plan on removing the console in the next day or so to have a look anyway. Any advice is most welcome.

I would rather avoid running a wire all the way behind the driver seat if possible!

Greg

 

I wouldn't advise splicing a wire into the control panel reverse wire. The F1 TCU is looking for specific resitances in the panel circuit when the R button is pushed and not pushed. If you add a splice for your radio circuitry, it might add the wrong resistance and the F1 TCU might not recognise that reverse has been selected. Also, the radio is probably looking for 12 volts rather than a resistance. If you can confirm this, you might be able to use an unused harness in the console:

Some of the wiring harnesses on the 360 are common to both the F1 and the gated car. Somewhere in your F1 car's centre console will be an unused two pin connector with a red and a red/green wire attached to it. This would be used for the reverse switch on the gated car (but the switch is not fitted). In theory, if you can run a wire to the radio from the red/green wire on this two pin plug, this will provide a voltage to the radio when the TCU activates the reverse light relay.

Here's the circuit :

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27D is the unused gated car reverse switch plug. When R is selected on the F1 car, the F1 TCU puts out a voltage on connector 8H (pin 1). This energises the coil of the reverse relay. However, the wire going from plug 8H to the relay goes via splice S31H. This splice is also connect to the unused reverse switch in the centre console (27D).

I'm assuming that your new system doesn't need a lot of power to trigger the reverse camera, otherwise the F1 TCU may not have enough power to activate the reverse relay. Also, I'm assuming the TCU doesn't monitor the current in the reverse relay coil circuit. The TCU might generate a fault code.

I don't know if anyone has tried this technique before.

(EDIT: only use the red/green wire on the 2 pin plug, not the solid red wire. The solid red wire is permanently live, so take care not to short it to anything) Note that "RV" is the Italian colour code for red with green stripe.

 

With the camera located in the rear, the easiest way is to tap off the reverse light bulb. I personally would not use a vampire tap and simply make a plug/play harness that allows you to plug in the OEM harness, get your trigger and ground, and then plugs into the tail light socket/harness.

I don't know if the 360 is the same connector as the 430, but these are the connectors I used on my 430...

https://www.amazon.com/dp/B07QFW8X9Z

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Corey thank you but as mentioned--my reverse trigger wire is located in the front by the RCA input--on that end, not the rear camera end. This poses an issue because I cannot tap into the rear reverse light--which would be straightforward and rather easy. Now I'm tasked with finding a 12V reverse source near the dash.

Qavion, thank you for the invaluable advice. Would love to be able to find that connector 27D. Can you provide any specific info where in the console I may find that unused connector? I would assume near the F1 reverse lever?

 

which model for the reverse camera? Mine had an rca cable as well as a reverse wire with it. The wire just told the head unit when to display the video on the head unit. It got that signal from the back of the car from the tail light harness when reverse was selected (as Corey mentioned above). Worried we are mixing terms. The models of the CarPlay unit and reverse camera may help.

 

Looks like the plug is on the RH side of the console, down quite low:

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Connector 38D is the Hazard Switch connector, so forward of that.

 

Sorry, getting my lefts and rights mixed up.