How about a photo? Yes, it's from my 73, but I think the 70 would be similar. Yes, it branches off the main wiring harness.

 

Hi all,

 

Just searching through my drawings on the 240Z wiring diagrams. I was buzy adding terminal blocks te the early 71. It also needs some update "thanks to @Namerow for his input back them" I was too slack to finish it.

 

I could work on the "Terminal block version", but I would need help from you guys since I don't own a 240Z and like mentioned in the thread, the manuals have their issues.

Here is where it was in 2015. I also had a request to add Line colour text for people that are colour blind. It's all possible, but I don't want to waste my time if no one is interested. My absence in the last 12 months is due to health issues in the family.

 

ColorWiring240Z1971Early_TerminalBlockExample09-mar-2015.pdf

Looking through the drawings to see what I was up too 9 years ago🫣

Most of the terminal layouts are from the service manuals and photo's members posted in threads on this site.

I made some screen shots of some of the sections still kissing the terminals. I remember working on the antenna switch, but could not find a photo of its terminal block.

I think I'll first update the schema with the remarks from @Namerow and @Captain Obvious b

10 hours ago, SteveJ said:

How about a photo? Yes, it's from my 73, but I think the 70 would be similar. Yes, it branches off the main wiring harness.

Thanks Steve. I'll make that clear on my wiring diagram when I'm making the next batch of changes.

4 hours ago, EuroDat said:

 I remember working on the antenna switch, but could not find a photo of its terminal block.

Thanks Chas. I looked through my pics and don't have anything good, but I believe the three connections to the antenna switch are three independent spade connectors on three loose wires. I'll confirm when I get a chance unless someone beats me to it.

I'll work on the "vintage" style diagram and you can work up the "new style color" version. Might just be me, but I'm finding working on an early car is enjoyable using an early wiring diagram. Cleaned up and corrected, of course.  Kinda quirky. 

So how would you like me to communicate mistakes on your diagram? Screen shots? For example, like this:

Hi Captain, Communicate mistakes on my diagram or screen shots would be great. Your example is very clear. Thanx

I like the early wiring diagrams too. That is why I'm trying to keep it close to the original layout and adding terminals.

 

 

I also found a dash connector diagram in the 1971 supplement where I can make out the radio connectors.

I can't find anything on the Passing relay. 

Ill make a list of things I miss. If anyone has parts handy and can take a photo or even out of memory would be a great help.

Please don't hesitate to make or suggest any corrections. Like I mentioned, I don't own a 240Z to fact check any of this. 

I made a low res print in pdf of this last update Rev1.1

 

The radio connector is not right. It should be 4 pole. See screen shot of the supplement. Connector Pos:13. I think the speaker wires come from pos 13?

 

ColorWiring240Z1971Early_TerminalBlockExample09-aug-2015 Rev1.1.pdf

Chas, I took a couple pics of the radio area and will post them when I get a chance. In the meantime, here are a few things to look at:

First, As drawn. there is no power being supplied to the accessory relay or ignition switch. You need a connection dot on the W/R wire:

 

Second, the map light and lighter have black wires coming off them to make connection to ground. I have pics of these wires, but they were never shown well on the original documentation:

Third, maybe I'm misunderstanding the intent of your drawing, but it appears the heater blower motor appears twice in two different shapes:

Hi Captain,

You have an good eye for detail.😀 I'm not sue if the Map light uses a bullet connector of spade for the power supply?

The blower is in the cabin and I think the Cooler is the engine fan maybe? , but I must admit I have never seen an original 240Z with original air-con fitted --> Thr blue branch off wire. The was from a source file I used from XenonZcar 9 years back.

 

 

 

I see the Cooler is gone in the late model 1971 FSM Supplement

Does the 70 car have a different antenna switch than this?