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I haven't messed with that flasher, but I have a couple ideas... First, yes, it is completely conceivable that the electronic flasher is susceptible to polarity issues. I'd certainly make sure you have it wired with the load on the "L" pin and power on the "+" as shown in that diagram. Second, does that "two wire" flasher need to be mounted with it's tab attached to ground? In other words, is it really a three wire flasher, but they don't count the third wire because they might be making a ground connection through the mounting tab? Just some ideas.

They definitely were. Did that cause the brakes pads to tighten on the rotors? There was some brake dust everywhere. I ended up doing 3 things at once, flushing the brake fluid. Disassembled the calipers, and repack and set the wheel bearings correctly. The wheel bearings heating up may have caused air in the brake fluid to expand and tighten the brakes, I don't know. I just finished it off by adjusting the pedal to the floorboard distance, it was 7", now it's 8". Same with the clutch pedal, it was an inch off. Then set the master-vac push rod length to 3.5mm below the flange surface. I had backed everything off while 15 miles away trying to get home, not knowing what was going on. Things are looking good now.

That’s a first for me to hear. Not sure how that explains the heat problem you are describing?

So wheel bearings were too tight??

So I just did these seals on a manual transmission. The large Oring seal seals the drive body to the transmission case. I'm not sure the little top hat seal would seal anything out. The small square sided seal goes inside the speedometer gear drive body. It seals the speedometer cog shaft. If this seal gets hard or goes bad, liquid leaks up into the cable housing until it finds a way out. Usually a crack in the speedo cable housing. I replaced mine and the floor under the car has stayed dry. I will have to check the fluid levels again soon to make sure it's still full but I believe those two seals are the solution

Okay, found my first error. The flashers aren’t flashing. I had replaced both the TS flasher and the hazard flasher with one of these LED-specific flasher relays. When the switch is thrown the lights come on, but they are just on, no flashing. Unplug the flasher and there are no lights, which makes sense because the circuit is broken in that scenario. I swapped an aftermarket replacement for the stock one into the spot for the turn signals, but there was no change. I haven’t had a chance to get to the one for the hazards yet. Any thoughts? Edit: After looking at the spec diagram on the red relays and comparing the marking on the original relays, I’ve found that the polarity is backwards. This flasher relay has the pins flipped from the one I am using and is the one I should have bought. Maybe if I swap the wires in the connector it will fix it. I just blanked on checking this.

Going to do that tomorrow. Hope that will pin point the leak.

Yes I did just add. I think the AT holds 6 qts. I am having it checked out this week. Thanks for the suggestion

That's quite a puddle you have there! Move the car to a dry spot and put fresh newspaper under the area. You should be able to figure out where it's dripping from. Maybe some Teflon tape and a good tightening of the speedo cog housing where it screws into the transmission?

I really don't know about auto transmissions but seems like my auto Camaro I had to check hot and in gear with the E-brake on if I'm not mistaken. Have you recently put fluid in? Could just be slight over fill? Good luck with it no matter what.

Here are a few pics that are puzzling. The connection of the speedometer cable looks dry. The cable has a drip on it and the floor show fluid.

Chances are it’s leaking on the speedometer housing itself. It’s been a minute but if it’s like the manual transmission there’s an O’ring and a seal like @siteunseen mentioned.

Thanks for that. I will.

The speedometer cables are the same. If you don’t know or haven’t heard, Go to “CarPartsManual.com”.

Great. Thank you

From the thread, "That little Top Hat in the pictures only comes with a new Speedo cable. However all is not lost. It is just a secondary seal. You can go to home depot and get a flat rubber washer that will do the same thing. They come in various sizes and have approx a 1/8" dia inner hole." @Chickenman

The seal I need is like the seal on the right

This has the same part number. #51 in the microfiche. Datsun Z Transmission Case & Fit...Datsun Z Transmission Case & Fitting (Automatic-3N71B) (F...

I bought the seal from Nissan, p/n 32709-14600 if that's the one you need. Mine is a manual but the speedo housing should be the same. There's some more info in this thread. Here's some for sale... https://www.google.com/search?q=32709-14600&rlz=1C1VDKB_enUS1121US1121&sourceid=chrome&ie=UTF-8

Gang - I'm also in a classic British car restoration forum and they had a really cool thread idea that I wanted to bring here: Did you buy your Datsun brand new and you still own it to this day? If so, please post the oldest photo of you & your car in this thread, and maybe write a little story about what prompted you to buy it at the time! * Also welcome in this thread are stories & photos from Z owners where another family member (parent, grandparent, etc) bought the car new and it has stayed in the family until present day Looking forward to reading your story! I know @jfa.series1 has one!

I am sorry. I need the seal for that Speedo cable attaches to the Automatic transmission

Where in the world can I buy or does anyone have a fix for a speedo cable leaking where it screws into the transmission on a 72 automatic transmission Thank you

I drove it about 15 miles to the car show, never touched the brakes, just used the E-brake. Front wheels were heated up some. Got home and they were both about 170-180°. I took apart the calipers, they seemed okay. Very hard to remove a couple of the pistons. Oiled them up and reassembled. Checked the wheel bearing rotation starting torque with my fish de-liar. They were both way too tight. Replaced the grease in the wheel bearings with fresh grease and torqued them correctly this time. Went for a drive, problem solved. Wow, fun car!

I was given one of those years back for Christmas! That went straight in the can!😂

Darn it, you locked in my grammar error. One the. It has the same mileage now as when it had dual filters. That's good, for the engine.