Brake warning light, The quest for success continues Options

[PaIsa]

So I am back trying to get my brake warning light to work properly. The situation before I started searching for the solution was the following:

Brake warning light was always blinking whatever the car condition. Blinked with the ignition ON. Blinked with the engine running and hand brake applied (normal). Blinked with the engine running and hand brake removed. Blinked with the engine running, hand brake removed and MC wire disconnected. So basically, blinking all the time!

So I was investigating the emergency (hand) brake wiring. Remove the seats, center console, etc. Looked at the emergency brake switch and seemed to work OK. There was a contact (closed circuit) when the switch was in position where the emergency brake would be applied and no contact (open circuit) when the hand brake would be removed. Looked on the wiring for evidence of short to ground but was not able to find anything. The wire goes in the center tunnel and is accesible until the shifter where rather then following the main wiring harness and the speedo cable, it goes under and God knows where it goes!! So I was not able to follow it all the way.

Now I have some disconnected wires near the brake fluid reservoir (already a thread on this trying to understand where these should go). The wires are brown-white and brown-white connected with a brown wire. The brown-white wire that is connected with the brown wire is cut.

So after I reassemble the emergency brake wiring, I did some test again.

Ignition ON, the brake light comes ON. Whit the engine running, no more brake light blinking.

So now I tried with the cut wire (the one near the brake fluid reservoir) reconnected. Brake light blinking all the time. Disconnect the wires, no more blinking when the engine is running.

I am lost. Even writing this I am not sure if I am right with the tests I did and the results I got.

Anyone has any advice? I looked at the wiring diagram, but not sure!!

I would like to have this working but don't want to go crazy with this!!

The car is a 1972.

[Literati914]

..The original wire seems to be brown-yellow, although I would have thought it would be brown-white. In the image blow, we see the wire going to the E-brake switch (yellow wire running behind were should be the driver seat. The tie-in to the original wire is where there is white electrical tape.

That's interesting.. when you raised the question regarding the ebrake lever's wiring - I immediately thought 'that is a Brown/Yellow wire' (I recently went thru and installed my entire '72 harness).. then I looked at the diagram that was posted and it shows to be BR/WH. Now you say it's Brown/Yellow so I was correct on that.. wonder why the diagram chart is showing different (IMG:style_emoticons/default/idea.gif)
-Anyway, there is a Diode behind the combo gauge that tie these items together (combo gauge/Seatbelt warning/Ebrake) - perhaps that diode is bad. But it's usually the simple things - I think you may be getting a flashing light because you have the seat belt warning lines disconnected. Why are they disconnected anyway?