Looking at Fig. 7.1 in the S57 wiring diagrams, can someone tell me why I cannot interpret this. Normally I'm pretty good with wiring diagrams, but this one has me licked!

The following is my (limited) understanding of it:

Assuming hazard is set to "off" in the diagram.

Power leaves the Haz. Sw. at LGK and connects at term. 49 of the flasher.

After that I'm completely lost! Help.

 

Heh heh. You're not alone. My understanding of it is fleeting and tenuous...sorta like a math concept that you're on the cusp of grasping but can't quite reach the "Ahhhh...HA" moment

This might help

Signals, turn and hazard

Cheers
DD

 

Later on I'll have another look; maybe something will hit me after all these years

Cheers
DD

 

there is an error in the the diagram published by Jaguar.

it was discovered by another owner in the 1990s. I have the revised schematic, will post it here lnext few days.

 

Does the error involve the diodes? Specifically, the direction of the diodes?

Cheers
DD

 

no, it involves the Hazard Switch wiring.

 

Doug, do you have a link for the Boot Lock Solenoid thread? Can't find it in the Search.

 

Heh heh, it was buried in another thread

I'll find it!

Cheers
DD

 

Yeah, that rings a vague bell.

It caused a lot of problems when people went to replace the hazard switch

Cheers
DD

 

It's toward the end of this thread:

https://www.jaguarforums.com/forum/x...-174395/page4/

Cheers
DD

 

no worry, just that I wanted to add the following:

I have a Ford door Lock / Unlock solenoid per the pictures below. Very similar to the XJ solenoid, and it only has 2 contacts. (Ground and Hot I assume).

So how can the Ford solenoid do it with two contacts??

 

Perhaps it's spring loaded to the "locked"position (relaxed state). Then the single hot contact could be used to "unlock" only.

Or, the unit is chassis grounded and one hot contact locks and the other hot one unlocks?

Just my 2 Canadian cents. I was not even aware that my S3 had a boot lock solenoid!

 

Both plausible.

Or, an upstream control module reverses polarity on the two terminals to reverse direction


Now you know !

It's 'lock only' unless modified.

There were 3 variations of electric locking on the Series III....but we're getting way off-topic!

Cheers
DD

 

I would go with the 2nd one, two hots, body grounded. My Ford has a LOCK pushbutton, and a UNLOCK pushbutton, but the solenoid has only two contacts.

But yes, this is off topic, sorry.

Below is the Topic resolution hopefully.

 

Follow the 1 thru 4 diagrams and you will see the error from Number 1 (original published diagram), and Number 4 (showing the difference). This was from the 1990s at Jag Lovers.

The last Text file is an explanation of the diagrams written by the Jag Lovers member.

 

Here's another diagram (correct?). There are some differences between the two - wire color anyway.

 

I think the whole problem is at the Hazard Switch wiring. If you can use the Turn signals with ignition switch OFF, the battery power wire is in the wrong connector. It should only power the Hazard Switch from the battery, ignition switch OFF.