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UC wiring diagram


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#26 slack one

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Posted 30 July 2020 - 12:08 PM

much better . now i can have another go at the wiring. thanks Gary.



#27 _SRH11_

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Posted 03 August 2020 - 10:45 AM

UCgazman a fantastic job. Thanks.



#28 UCgazman

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Posted 03 August 2020 - 04:03 PM

Just happy to contribute something useful :D



#29 Dr Terry

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Posted 03 August 2020 - 10:05 PM

Very impressive Garth.

 

Have you given any thought to an LX version.

 

It differs quite markedly from LH in the headlight dimming & emissions area, a well as little items such as the later type dual brake warning lights.

 

Dr Terry



#30 UCgazman

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Posted 04 August 2020 - 12:12 PM

I dont have an LX to examine wiring on, but if there's a wiring supplement or a Gregorys/SP schematic or similar floating around I'm happy to do it...

I might actually have something here (Max Ellerys I think?), I'll see what I can find B)



#31 Kevrev

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Posted 04 August 2020 - 01:53 PM

Here's a colour LH electrical diagram and a supplement with the differences in LX unfortunately only in black and white.

Hope this helps

Attached Files



#32 UCgazman

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Posted 04 August 2020 - 06:43 PM

Ok you twisted my arm :P



#33 Kevrev

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Posted 04 August 2020 - 07:10 PM

Ha Ha more of a gentle prod than an arm twist!

Let me know if you need help on wiring colours, I have a V8 LX I can use as a reference.



#34 Dr Terry

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Posted 08 August 2020 - 10:46 PM

OK I have found one error in the new UC diagram.

 

The brake fail switch should have 2 terminals & a wire going to the ignition switch. This also applies to the LX update (March 77)

 

The only diagram that I have seen with this drawn properly is in the HX supplement. It is only black & white, but the wiring is done in the same style as yours.

 

PM me your e-mail address & I will send you a copy. I don't know how to post it on the Torana forum.

 

Dr Terry



#35 Kevrev

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Posted 09 August 2020 - 01:33 PM

Hi Terry,

 

Is this the diagram you're referring to?

 

Cheers Kev

Attached Files



#36 Dr Terry

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Posted 09 August 2020 - 04:12 PM

That's the one.

 

That HX diagram shows both versions, handbrake & brake fail combined & separate. I don't remember ever seeing an HX without the 2 brake lights on the dash. Maybe it was a late decision to fit the separate brake fail to all HXs in production.

 

The LX didn't get it until around March 77.

 

Dr Terry



#37 UCgazman

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Posted 09 August 2020 - 07:20 PM

PM sent Dr Terry.

I'm gonna have a heap more wiring questions now I've started the LX version, but I might start a separate thread for that...



oops, should have refreshed the page first!



#38 Dr Terry

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Posted 10 August 2020 - 01:24 PM

PM sent Dr Terry.

I'm gonna have a heap more wiring questions now I've started the LX version, but I might start a separate thread for that...

 

From memory the only differences between LX & LH for its initial release was for the headlight dipper relay & stalk. Even the courtesy light in the hatch should mimic the boot light in a sedan.

 

For July 1976 the ADR27A GEAR was added, which should be same as the UC additions.

 

For ADR31 (Feb/March 77) when the brake lights were separated, that HX info will work.

 

Dr Terry



#39 UCgazman

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Posted 10 August 2020 - 01:30 PM

Version 1.1 with Brake fail warning switch fix

 

50208316558_1b18e34157_o.png



#40 Dr Terry

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Posted 10 August 2020 - 02:11 PM

OK, if you look closely at the HX circuit you can see that the 2-pin brake fail switch, isn't just a simple switch.

 

The 2 pins are joined inside the socket of the switch & then they are shorted to earth if & when the brake pressure drops.

 

The idea of this is that the light on the dash won't illuminate if the switch is left unplugged as a safety feature.

 

I have a clearer pdf of the HX diagram here if you need one.

 

Dr Terry



#41 Dr Terry

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Posted 10 August 2020 - 04:30 PM

I have found a good illustration of the LX headlight relay, with the pins numbered & the wire colours noted, I will send that to you.

 

I have also noted that the original LH one has missed the rear screen demister, maybe we should revisit the LH diagrams & tidy them up. Also the optional dash cluster is shown on a separate page, as is the a/cond, audio system & power antenna etc..

 

We probably don't need to worry much about the audio system ,but we do get a lot of questions on the forum relating to the tacho & optional instruments.

 

On that topic, AFAIK no UC model has a temp light, the gauge was standard even on the base model. On the UC diagram remove the word 'switch' from the engine.

 

Dr Terry



#42 UCgazman

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Posted 10 August 2020 - 05:07 PM

Yep you're right, that HX diagram was blurry so I used the gregorys one - which is wrong... I just checked the VB commodore manual as the later UC uses the commo style M/C with built in prop valve, and its also wired the same. Gimme 10mins and I'll upload version 1.2 B)



#43 UCgazman

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Posted 10 August 2020 - 05:50 PM

Version 1.2 updated brake switch & temp sender

50208907993_ce3cfb786e_o.png



#44 Dark Side

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Posted 11 August 2020 - 05:45 PM

You have done an outstanding job and I cannot wait for the LX version. Just one question on the engine harness connector (top RH side, third wire down) does the pink wire splice into the yellow or brown wire? Keep up the good work.



#45 arrimar

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Posted 11 August 2020 - 05:55 PM

Yellow and pink join in the connector.

#46 UCgazman

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Posted 11 August 2020 - 06:30 PM

^Yep - it got pretty busy around that connector but I'll see if I can make it clearer on the next update :spoton:






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