I have a few niggling parts to finish before I try and fire my engine up. Then I will most likely have a couple of bigger ones! Anyway, if anyone can assist, it would be appreciated. First photo. I have this wire, which looks as if it carries power. It looks to run in the V, and it looks to have been hot. What does it connect to? Second photo: I have this microswitch, with two attached resistors(?), what is it good for? what does the set-up actually do? Third photo: it looks to me as if the microswitch is part of the Swiss version of the ignition. I am unable to see what transpires here. The white connector in the middle of the last photo goes to R1 and R2 on the coil and somehow should be connected to the microswitch, but I am afraid the drawing does not make sense to me. It looks like two wires in and one out? Lastly, two connectors, which looks as if they connect together, both white and red wires seem to be connected to the red wire on pin no 1 on the dinoplex connector (resistance between 2 and 35 Ohms) If anyone can shed some light on the issue, I would be very happy. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
I can tell you the reason that Ferrari installed the throttle-actuated microswitch. The GM TH400 relies on a solenoid to kick down from 3rd to 2nd or 2nd to 1st. When you floor the throttle, the switch closes and 12 volts are sent to a connector on the side of the transmission housing. Those resistors or whatever they are were not installed by Ferrari. I think I've seen references to the Swiss emissions add-ons before in this forum, but I don't remember the substance.
If not hooked up, there will be no KD. In the following I assume 12 V is required to open the solenoid for the kick down (KD). The correct wiring would then be 12 V coming out when the microswitch gets pushed by the throttle pivot(?). You can actually see it will click at about 90% throttle, I guess. I find the diagram strange, is the dotted line is the extra cable cover? and it seems to be grounded. And it looks as if there is only one wire coming out, yet there are clearly two wires shown one to Dinoplex pos 1 and another to DP 2. I will have a closer look tomorrow.
The first wire pictured does connect in the V to an oil temp or pressure sensor. The sensor is threaded into the plate that also holds the two filters. While you're in there inspect that flexible hose that carries oil from the front of the right side valve cover to the rear of the plate that holds the filters. The stock hose is rubber and when it ages it gets brittle and can develop leaks. I replaced mine with stainless flex.
That is the problem, that sensor is already connected. The unconnected wire is also covered in a green plastic, but it is not quite long enough to reach the sensor comfortably. It carries 7V when I switch on the ignition key. I shall inspect that small pipe carrying the oil in the V. Thanks. Just an addition. There is a sensor in the base of the oil filter holder. That could be temp or pressure. That is connected. There might also be another sensor, if both temp and pressure is monitored (I think there is a temperature gauge for the oil as well) where is the second sensor located, if such exist.
I have checked, the front sensor seems to be a temperature sensor, it is connected. To the rear of the V, there is a bigger sensor (I assume it contains a diaphragm and thus a pressure sensor) and that is connected too.
