I'm all LED except for the dash. I used a couple of these from Amazon for blinkers and emergency flashers and they've worked just fine since I installed them back in 2017.

Amazon.com: VOFONO 2-Pin Electric Flasher Relay, 12V Heavy Duty 2 Pin Compatible Automobile Motorcycle Bike Scooter Fix Turn Signal Bulbs Fast Hyper Flash，Two Prong Round : Automotive

Quick one today.

After working out some kinks in the wiring (thanks @SteveJ) I’m nearly done with it. I refurbished the wiring for the tail lights this week. I’ve always planned to rework the arrangement to be more like (but not exactly like) the euro tail lights.

I’ve read a ton of stuff about these cars getting rear ended, so I wanted to make it as clear as possible that I’m braking. I still plan to add a third brake light, but I think this is substantially better than the original US tail light configuration.

Driving lights are the outside top lights only.

Turn signals are the outside bottom lights only (thanks to @w3wilkes for the flasher recommendation).

Brakes all of the top lights.

Now I have to figure out what I’m going to do with the front turn signals. These LEDs are so bright that when the driving lights are on you can’t tell they flashing from more than a couple feet away. I’m wondering if there’s a way to make it cut power to the driving light wire only when the turn signal is working.

Edited June 23Jun 23 by Matthew Abate

On 3/17/2024 at 10:24 PM, Matthew Abate said:

Can you guys help me figure out which relays I’m missing?

This is what I’ve found in my boxes:

1 - Horn Relay 26320-89905
2 - Defroster Relay 25230-N3000
3 - Thermostat Switch 22110-E8000
4 - Air Conditioner Relay 25230-89914 (the internet also says heater)
5 - Intermittent Relay 28820-N3300
6 - Fuel Pump Relay 25230-89915 (the internet also says headlight)
7 - Hazard Flasher (A & B not shown)
8 - Turn Signal Flasher
9 - Fuel Pump Relay 25235-P0101 (the internet also says fuse panel voltage regulator; I’ve seen a different relay with the same number)
10 - NLR-132 will be used for headlights

I have a key-warning buzzer coming in the mail for when the door is open and the key is in the on position. And I will not be using the Throttle Opener Relay that goes on the engine side of the firewall.

I have a 4-pin connector on the front fuel pump harness that I figure goes to a relay if you have an electric front fuel pump. I’m keeping my mechanical one for now because it is NOS. If it gives me issues I’ll switch over. I am assuming not having this connected doesn’t mess with anything since that was stashed away with blue tape from the factory.

I’ve also seen things about a “heater / choke” relay, but don’t see anything for that in the diagram. I found a relay numbered 25235-P0110 on a Datsun 1200 wiki, but can’t find anything for Z cars.

—-

I think I’m all set. I don’t think I need to retain the thermostat switch (#3). I think this might be unique to 1973-4 automatics.

Can anyone identify that thing or think of anything I might be missing?

Thanks Matthew for a great write-up =)

Here is my tiny contribution to it: You were wondering about the Thermal switch 22110-E8000 and stating that it's probably for the automatic model only. I found information which connects it also with the manual model, with the emission control device (EGR) to be more precise. It can also be found from the -73 wiring diagrams (both manual/auto). Please see pictures below:

Keep up the good work!

Edited 1 hour ago1 hr by Salonmi