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Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sat Jul 25, 2020 10:24 am
by oldelanman
Elanintheforest wrote:
I'd still like to know how to get the choke and heater cable outers off the dash though!!


Hi Mark
On my S4 the heater cable outer is secured with a bezel nut from the front .. the same as the headlamp vacuum valve. It's the original cable so yours may be the same. My choke cable is a replacement and is secured by a normal hex nut but the original may have been the same as the heater cable.. can't remember now.
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Heater cable
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Choke cable

Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sat Jul 25, 2020 10:47 am
by lotusfan
Mark

Just to add to this - the retaining nuts are the same sort of thing as those retaining the toggle switches on your S3 etc. Pull the cables all the way out and there you are!!

Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sat Jul 25, 2020 5:44 pm
by Elanintheforest
Thanks Roger and Mike. A quick look into the outer shell of the inner cable revealed a lot of dust and fluff stuck onto old greese where the cables had been lubricated. The little slots of the bezel nut were soon revealed and they were both off in seconds as they were both loose! Happily, both cables went back easily into their respective outer bits, and they will go again. Easy when you know how!

I now have one last question about the dashboard area of the S4 / Sprint. My car has the bonnet pull mounted on a bracket, which is mounted on the extreme right of the dash, underneath. I was a bit confused when taking it off that the bonnet pull seemed to have wires going to it, but they are going to a small switch, which looks the same as the anti-theft switch in the glove box. the switch is very well hidden away, and has two dark green cables and a light green with yellow tracer cable going to it.

It's certainly a factory fitting, but I can't think what it's for unless it's another security switch of some sort. Light green with yellow is described as being for the hazard warning switch to warning light, and dark green seems to be for most things when the ignition is on.

Can someone put me out of my misery, and if it is a security switch, how does it work in conjunction with the one in the glovebox?

Mark

Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sat Jul 25, 2020 5:47 pm
by oldelanman
It's the hazard light switch.

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Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sat Jul 25, 2020 6:08 pm
by Elanintheforest
Thanks Roger. From the wires I have and the diagram that makes sense, but I only have the one flasher unit (for the standard indicators) and nowhere on the dash for the hazard tell-tail lamp.And no wires for the hazard flasher unit that I can see. I do have the lamp, along with the brake fail lamp, which have red plastic covers over them and are taped up out of the way!

I'm guessing that the hazard warning lamp was for some markets only, but incorporated into all of the later Sprints? If not I'm going to have to go back to the loom and have another study! My car is January 1970 by the way, too early to have any Sprint bits.

Mark

Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sat Jul 25, 2020 6:16 pm
by lotusfan
Mark

I do hope you are going to get rid of the glovebox security switch, you won't regret it!!!

Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sat Jul 25, 2020 6:50 pm
by oldelanman
Hi Mark,
My S4 did not have hazards fitted but the loom had all the wiring including warning lamp bulb holder, the switch and flasher unit were not fitted... yours sounds to be the same. None of the wires had connectors .. just bare cut ends!
I did a diagram when trying to figure out the wiring which might help.
I've since fitted an electronic flasher unit which does both indicators and hazards and used a modern rocker switch mounted below the dash in the same location as your original switch, used all the existing wiring.
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Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sat Jul 25, 2020 9:08 pm
by Elanintheforest
Thanks Roger. Mine does have the switch and the warning lamp but that's all! I thought it was strange that there was no mention of it in the owners handbook for the S4. The S4 / Sprint hand book mentions the hazard lamp for the North American market only, but doesn't mention where the switch is!

It's mounted in such a hidden location there is no way you could find it accidentally. Very odd, and a tiny switch as well.

Mike, I will probably get rid of the switch in the glovebox. It doesn't feel like the strongest bit of kit on the car!

What is the best way to address the issue?. Put in a different switch or just join the white cables for the coil, isolate the horn cable and have security another way?

Mark

Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sun Jul 26, 2020 6:51 am
by elanfan1
Mark my 71 Sprint had the same hazard set up as you and worked too. I suspect the wiring is linked into your existing flasher unit somehow But I’m no electronics engineer. Bit like the flash facility which many find difficult to get working it’s down to some rather clever engineers from the period. Can’t imagine that Chapman would have wanted to add the cost and weight of another relay no matter how cheap and light.

Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sun Jul 26, 2020 7:04 am
by oldelanman
The hazard switch and warning lamp are both shown on the dash layout drawing in my '72 edition of the workshop manual but there is no mention of it in the text. The anti-theft switch does get a whole paragraph however !
The switch is troublesome probably because it is not used frequently enough to keep the contacts clean and in my opinion it's useless as an anti- theft device anyway as it only works if you try to start the car with the ignition key .. far better to fit a modern Thatcham immobiliser if you're concerned about security. I would remove it, join together the two white wires and insulate the other two.
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Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sun Jul 26, 2020 10:13 am
by lotusfan
Hi Mark

Roger gives good advise about the glovebox switch. If you don't want Thatham type security measures a battery cut off switch is a good alternative. I have one in the boot which obviously can be locked but if someone wanted to steal the car a cut off switch won't deter a determined tea leaf.

Keep up the good work and don't forget to fit the heater water valve to the head before you go too much further.

Re: Elan S4 being awakened after 35 year slumber.

PostPosted: Sun Jul 26, 2020 12:35 pm
by Elanintheforest
Thanks guys, I think the wiring is sorted (for now!).

The security switch will be left where it is but the coil wires joined up and the earth / horn wires removed and insulated. The hazard switch will stay as it is as well. I always put battery isolators on the older cars just in case! Not really worried about the car being pinched, but with the 'hot' wires that live in an Elan, an attack from Mr Mouse is more of a concern.

I had a further explore of the loom going to the back of the car, and found the additional pair of courtesy light cables, which can only be for the FHC lights on the rear roof pillar trims. From what you say Steve the Sprint is the same as well, so this loom fits the S4 and Sprint, the Domestic and Federal and the DHC and FHC models. That seems nice and simple!

I won't fit the heater valve just yet Mike as I haven't drilled and taped the chassis yet. I only got the dash out as I thought that it would have to be replaced anyway, and the wiring checked. Marking up through those two bobbins behind the dash is a lot easier with it gone.