93 240SX vert. too, WIP

"68% of Republicans don't believe in evolution, on the other hand, only 5% of monkey's believe in Republicans." ---Stephen Colbert

I then went in the console and changed the headlight switch to see if that was the problem. It wasn't. It did the same thing... except the healights won't even come up now when I hit the high beams... not with either headlight switch! Who knows why this is. I don't know if this changed before or after I swapped out the relay.

Is there a relay or relays that make the lights go up when you turn the lights on?

---Dan

Please????????

Not yet. Where is it located?

Could I get a better descrition of the box? Color maybe? Thanks.

The switch was used but it was from my parts car and the lights did work properly on that car. Since I have the parts car, I don't mind swappibg parts back and forth to see what the problem is.

As far as tesing circuits goes, I'm about as fluent with electronic circuits as Paris Hilton is with reality.

Sorry to put you guys through this, but like I said, I can just start swapping parts from the parts car. I just need to know what to start swapping first!

Ok, found it and swapped them out. But it didn't work...

I'm so frustrated... it makes no sense....

you have swapped all possible parts from one car to the other at this point so this leads to a wiring issue. You need to get a volt meter and figure out how to use it and start testing. I will help walk you through it. This is the only way you are going to find this problem.

I put the fuse back in and tested the red/blue wire you suggested. I get nothing until I turn the parking lights on. They come on, and then that wire has power. I tested it fron the front while the black box was unplugged and with it plugged into the box.

What's next?

(this is going to turn into a great troubleshooting reference guide for a lot of people... lol)

I think I know your problem but we want to check for voltage at one other location. remove retract relay #4 and check for power at terminal #1. the relay is in the box at the right of the engine compartment. the wire color is orange. My guess is you wont see any power there either but you should. If not we need to find the diode block, let me know what you come up with on your test and I will look for the diode block.

if you dont have power on either side post back.

I then took my radio out and lookd for the black box behind the pocket, but I couldn't find it anywhere. Do you have any pics of what it looks like and where it's located?

Now, I gotta ask you this... at what point did you know that was my problem? Did I have to tear all of those other things apart to figure it out, or could we have switched that in the beginning to see if that was the problem?

Question for you now though. Do you feel more confident in your circuit testing skills? do you understand what you were testing and why? other then the whole picture, I mean why you were testing that particular wire. If you under stand what it was you were doing you will most definitly be able to takle something like this in the future with much more ease and likely with out assistance as long as you have a diagram and know how to trace the power flow of the circuit.

I took that piece apart and I saw where it burnt out on the lil circuit board. Lil piece of crap... I have no idea why it's there and why they put it where they did. Often Nissan engineering makes no sense.

I now see exactly what you were doing, but I wouldn't have been able to follow that myself by using the book mainly because I had no idea where those parts were that we were testing...