Hi Ferrari Chat Need help my 355 GTB Headlight Dipped Beam stopped working. So I changed the Bulb, when I turned lights back on the LH Headlight Bulb was still not working but the headlight popped down and is now on the opposite rotation as the RHD Headlight. I have checked the fuses and the LH Dipper Fuse keeps blowing, checked back of headlight and everything seems fitted ok. Has anyone had this problem before? Thank you Les
Dipper fuse? Do you mean the LH dipped beam fuse? Or the headlamp motor fuse? How did you raise the headlight pod to change the bulb? Did you disconnect any electrical plugs on the motors? I can't relate one problem to the other problem. I think you disturbed something when you changed the lamp. For the opposite sense problem, I'm wondering if you mixed up the black and white 2-pin plugs on the LH motor/gearbox.
Thank you Qavion for the reply, I mean the LH Dipped Beam Fuse a15 I switched the isolator switch off when the lights where up. I didn't disconnect 2- pin plugs, just changed the bulb. Checked the back of the head light everything is connected.
Did you unhook the wires to the motor, there is nothing in the bulb that would cause it. According to you, this happend when you changed the bulb, the bulb was not the cause, something else happend in while you were doing that.
When put the power back on the LH unit went to go down the stopped while the RH unit closed. there are no on opposite cycles So when dipped beam is on the LH unit stays down while RH unit is up. I will contact my local Ferrari Specialist tomorrow and get booked in. Thank you
Went to go down? How far did it go down? Your next sentence says the LH unit stays down while the RH unit is up. I'm not following you. The usual problems with headlight lifting are: Broken gearbox (plastic cogs disintegrating). Blown diodes on the motor/gearbox (under the sealant). Corroded metal contact disk or broken metal fingers in the gearbox. Mechanical linkages not adjusted properly. Relay problems (swapping relays left to right sometimes makes the problem swap sides). i.e. the L/R motor relays in this case. It won't be the "motor control relay" (D) in this case as that would affect both sides. The LH Dipped Beam Fuse can only blow by a shorted lamp or shorted wiring (grey- black power wire shorting to earth). Is the wiring touching something when the pod moves? I have wiring diagrams for the 2.7 and 5.2 cars, but the headlight circuit is not an easy one to master.
Check the nut (#14 on the pic below) holding the crank-arm to the motor shaft. It is possible that the nut got a bit loose and that the arm skipped about half-turn and "jammed" to the shaft again in the new position at about 180 deg. Image Unavailable, Please Login
Thank you M.Stojanovis. I took the headlamp unit out, undone Nut No14 wound down the unit to the closed postion resembled and all ok! Quite obvious in hinsight I was convinced it was more electrical blow fuse/relay! Les
