trying to reassemble wiring harness after several years. The paper tags I used mostly worked except for where they fell off and got lost. I’ve been working through the FSM supplement and I have it mostly figured out but a few mysteries. I don’t have battery connected right now as I had some ugly heating issues with the ammeter lines and had to replace the connectors.

1: power for the illumination on the heater control unit- RL male spade. To where?

2: two female spade connectors from dash harness, RL and RB. Are these 39 and 40 on figure V1-1? Reverse lights. If so what are they supposed to connect to? They dump out right in the middle but don’t seem to go to fuse box. Can I safely use the RL one for heater control unit? Seems weird but if it s just ACC power…

3: RL female bullet hanging down from right near the clock. But from dash bundle. Don’t see anything that would have connected to that.

@SteveJ

You might want to focus on getting power restored for testing purposes.

Edited July 26Jul 26 by Yarb

Power is ready to go. Just don’t have it connected at the moment so I’m only testing continuity with multimeter ATM.

Only the 1973 had the back lit heater panel. 1970 did not light up.

4 minutes ago, Terrapin Z said:

Only the 1973 had the back lit heater panel. 1970 did not light up.

hmm well using a later panel wouldn’t be the first unoriginal thing about this car. The dash harness does seem to conform to the early 240z setup shown in FSM but I admit I haven’t actually tried to compare against the later 240z wiring diagrams.

mine has Floor label which seems to reflect the very last version of 240z panel if I trust googles AI. I’ll add that to the list of “what is THIS doing in this car?” Items.

Edited July 26Jul 26 by Warty

RL & RB together - Defrost switch (My assumption from looking at the 72 wiring diagram...I can't find the switch on the 70 or 71 wiring diagrams.)

RL in center - maybe radio light

@Captain Obvious was trying to update the wiring diagram for the 70 a couple of years ago. I don't know if he ever "finalized" the product to his satisfaction.

ah. defroster switch. that would make sense. this particular car doesn't have switch or wires [in the hatch window].

The thing that's confusing me really is that SOMETHING was connected to the illumination blade connector: it has a numbered paper label I put on there 5-6 years ago. I only put those on ones were I was disconnecting it from something. unfortunately, the other side fell off at some point.

On an aside, I got new 7.8mm blade connectors from vintage connections for the 10 AWG(ish?) ammeter lines, as the originals showed heat damage and oxidization. The wings that crimp are a bit short, and the pieces themselves are thinner metal than the originals. They aren't biting very well because the wings are short for wire thickness. Anybody else with them notice that? I think I'm going to try Anderson Power Pole connectors instead for those wires. Not original looking, but it's' writing I don't want anything coming apart.

Edited July 26Jul 26 by Warty
clarify statement about defroster wires

I haven't had issues with the Vintage Connections open barrel terminals. What crimpers are you using? This is the one I use. It has a die for open barrel terminals. https://www.amazon.com/dp/B0BJVH4J6Q

@Yarb has a set, too, but just with the D die (open barrel).

1 hour ago, SteveJ said:

I haven't had issues with the Vintage Connections open barrel terminals. What crimpers are you using? This is the one I use. It has a die for open barrel terminals. https://www.amazon.com/dp/B0BJVH4J6Q

@Yarb has a set, too, but just with the D die (open barrel).

This is the one I have. Same tool but only one die set came with it. https://a.co/d/06Q5t9Kj

the short wings that wrap the bare metal can’t get around all the wire.

10 minutes ago, Warty said:

This is the one I have. Same tool but only one die set came with it. https://a.co/d/06Q5t9Kj

the short wings that wrap the bare metal can’t get around all the wire.

I'll test it again after the home projects are done. There's too much chaos until all of the furniture gets moved back in (hopefully on Wednesday).

Here's the wiring diagram I made for the early cars. The most recent version is Version 8, and. I'm not aware of any errors at this point. As far as I know, it's accurate.

Version 8.0 found on page 7 of this thread:

https://www.classiczcars.com/forums/topic/69026-1970-wiring-diagram/page/7/#findComment-676548

I think the single RL bullet hanging near your clock might be for the glove box light?