Turn Signal / Headlight problems...

[280z1975]

Ok, so here is the situation (and yes I did do some searches, but I couldn't find anything of help)...

This is the last major problem before I will have my Z road worthy and it's been a LONG road to here and I just want to fix this problem and be able to take my Z out for a nice spin and enjoy it finally!

Ok, so the other day I went to work on my headlights (the high beams weren't working) and then I noticed the turn signals stopped. This was disheartining because they were working just a week ago. They do not flash in the tack at all. I don't think it's the flasher unit, because even if they are bad I think they will still show them as flashing in the tach, right?

Then a few days later the headlights stopped working!!! :tapemouth I used them that morning to drive the car home from the mechanic and then that night they just wouldn't turn on! I swear this car has some serious electrical deamons!

As of now all the side markers and brake lights work. I can flip the headlight switch on and it will lilluminate the sidemarkers, but that is it. I can also get the windshield wipers to light up. I have checked all the connections, cleaned them and added conductivity gel, but nada!

I took thed turn signal wiper apart and cleaned it, but nothing!

So I consulted the FSM and it gave me this chart (see attached page) for testing the signal unit. I don't really understand the diagram and exactly how to test it. Do I have to ground to a common ground or the ground for the actual circut? What setting should I have my multimeter on? 12v, 6v, or just testing for conductivity?

I have also attached the circut diagram for the turn signal system to help with the problem solving.

Thanks for the help.

[280z1975]

I still haven't sorted out the issue, but I have done a lot of conductiviy tests to see if the wires are getting any signal.

So I sat down and figured out how the signal unit inspection works and found everything to be in working order less the LO/HI beam button. That one isn't working right. Everything else passes the test.

So this leads me to believe the problem (no turn signals and no lights) lays in the wires. I grounded one probe on my multimeter and then started to test all the wires. I found the following:

#14 - no conductivity

#11 - conductivity when key is off / no conductivity when the key is on :stupid:

#10 - conductivity

#15 - Conductivity

#18 - No Conductivity

#15 - No Conductivity

#2 - Conductivity

W - No Conductivity

#3 - No Conductivity

#4 - No Conductivity

H - Conductivity

#1 - No Conductivity

#5 - No Conductivity

L - Conductivity

B - Conductivity

So as of now I have power to my side markers, no turn signals, no headlights but my brake lights are working. The wipers work also along with the wiper pump.

The no headlights. Well that might be a different story. I have the Headlight-Relay upgrade and I checked the conductivity to the harness point which gives the relay the signal and it's good. I will check my grounds to make sure they are well grounded (they should be as I ground down the area near them with a dremel).

I have a feeling the #14 wire has something to do with this. It's white and is responsiable for both of the turn signals. I don't get a conductivity signal from it.