lights out on 308GT4

went to drive the car tonight and I've got no lights. To be precise; the headlamps open, but no brights, regular lights, or even the amber lights. turn signals working; and also the interior gage lights are out as well.

the right fuse box which controls the lights appears to be ok, no burning smell or melted anything. fuses are intact.thought it might be the switch in the control stick, until I determiined that the gage lights are out too.
my mechanic had been fixing the a/c but the fuses are on the other fuse box, and everything looks normal there as well. any ideas?

 

let me try another question:

where is the relay box on a 75 308 GT4 (north american version). An owners manual I downloaded seems to suggest that there is a relay box and it's under the glove box. I see the two fuse panels in the glove compartment, but not any relay box under the compartment. only the heater box.
I do see a bunch of wires under the glove compartment, but there's no box and while there's something that may look like a relay, I don't see a bunch them and no box.

The reason I'm looking for it is that I'm thinking that since I have no parking or headlights it might be a relay, since there are different fuses for the three lights (parking, high and low beam) and they all look pretty good.

still looking for some advice. what about something from the 308 gt4 comprades out there. thanks.

 

but don't you think it unlikely that three fuses would blow at the same time? I would think I'm looking something which controls or goes through all three. also have the gage lights out and that's on a fuse which has a component which still works. that's why I'm thinking wiring or relay. I think the book says that relay "D" covers all or most of my affected lights. just didn't know where it was.

 

thanks for the detailed response; I thought I did download the 75 manual,but apparently not. is it behind the foot compartment behind the half removed carpet? looks like alot of screws to take out.
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great pedal set;

looks like I'm looking for "D" per the manual.

I guess I run a multi meter over it (assuming it looks ok) and see what happens. thanks

 

for the congentially and termninally ignorant, is the car off or on or on accessory while I'm doing the test?

 

GOT IT!

was reading the service manual and it mentioned something about a swtich under the steering wheel. well I didn't see any switch, but there was a rubber connector with some wires that comes out beneath the ignitition switch; the one or both of them were disconnected. probably happened when they were working on the a/c. plugged them in and voila; the lights are back on;
thanks to all for the advice; learned alittle more about the car.
next task; brake pads!

 

yea, had already checked it out. in fact, that thread and the one by gt4 compadre garvin is the reason I'm going to try it myself, despite some past DIY mishaps. thanks.