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Sun Aug 30, 2009 1:35 pm

 weird flashing headlamps (like a police car!)
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Joined: Tue Apr 28, 2009 8:25 pm
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Location: Colchester
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What number is a Lotus Seven?: 7
this happens only when light switch is in sidelight position and and when i rev the engine !
last thing we did was adjust regulator & cutout to specification .
As it seems this happens only when revving (charging ) i am assuming the two are isn someway linked .

seems that once you fix one thing .....

Is it likely that the headlamp flasher relay is at fault ? or maybe it's a bad earth on sidelights feeding back somehow thru relay ?
waiting to hear from you sparks wizards

RichC


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Sun Aug 30, 2009 4:28 pm

 Re: weird flashing headlamps (like a police car!)
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Joined: Sat Feb 04, 2006 9:43 pm
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Location: Buckie, Banffshire, Scotland
Hiya
May seem to be a weird thing to try but try unplugging all the relays and plugging them back in again. I sometimes get a similar problem with my dipped headlight relay and it sits there buzzing on an off till I unplug and reset. Just a thought
Andy

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Sun Aug 30, 2009 7:31 pm

 Re: weird flashing headlamps (like a police car!)
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Joined: Tue Apr 28, 2009 8:25 pm
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Location: Colchester
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What number is a Lotus Seven?: 7
okay handy
will try that !
cheers,
RichC


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Sun Mar 21, 2010 6:21 pm

 Re: weird flashing headlamps (like a police car!)
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Joined: Tue Apr 28, 2009 8:25 pm
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Location: Colchester
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What number is a Lotus Seven?: 7
forgot to mention that the problem seems to have disappeared as if by magic ! I supect the disconnecting did the trick.


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Sun Mar 21, 2010 10:21 pm

 Re: weird flashing headlamps (like a police car!)
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Joined: Sat Feb 04, 2006 9:43 pm
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Location: Buckie, Banffshire, Scotland
Happens fairly regularly on mine, and having studied the wiring diagrams countless times I can not see any reason for it to happen even with a short as it would require either a capacitor or flasher unit somewhere in the circuit, but there is no denying it does happen LOL

Andy

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Mon Mar 22, 2010 9:08 am

 Re: weird flashing headlamps (like a police car!)
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Joined: Mon Feb 22, 2010 9:00 pm
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What number is a Lotus Seven?: 7
The circuit was designed to have the lamps flashing if they were raised without being swithched on - for overtaking on the continent. Not all Elans were wired this way - from memory it required a second microswitch behind the vac knob and a flasher relay.


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Mon Mar 22, 2010 9:17 am

 Re: weird flashing headlamps (like a police car!)
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Joined: Mon Oct 29, 2007 8:14 am
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Location: Kent
If a relay earth is poor the points will not shut properly this can also be the switch or the relay but being a fibreglass car that were i would start if I did not have or know how to use a multimeter.
Neil


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Mon Mar 22, 2010 11:05 am

 Re: weird flashing headlamps (like a police car!)
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Joined: Sat Feb 04, 2006 9:43 pm
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Location: Buckie, Banffshire, Scotland
Neil
The fun bit here is that the points do shut and then immediately open as if the contacts opening is shutting off the power to the coil, however, they are not latch on relays or similar. Tis one of life's little mysteries like if you weigh yourself and then go number two and weigh yourself again more often than not the scales will show you have gained weight despite having relieved yourself of some.
Andy

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Mon Mar 22, 2010 11:45 am

 Re: weird flashing headlamps (like a police car!)
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Joined: Wed Oct 01, 2003 7:53 pm
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Location: Cambridgeshire
Not legal in the UK but it's only a flashing relay missing - I fitted it to my car once. It would be a great idea if the headlights came up quicker. I found I was usually past the other car by the time the headlights had started flashing...

Carl :-)


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Mon Mar 22, 2010 11:47 am

 Re: weird flashing headlamps (like a police car!)
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Joined: Sat Feb 04, 2006 9:43 pm
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Location: Buckie, Banffshire, Scotland
Have thought about wiring the front driving lights / fogs to an addition relay linked to the flasher switch on the stalk or the sidelights to give a flash ability but doubt it would be legal

Andy

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Mon Mar 22, 2010 6:17 pm

 Re: weird flashing headlamps (like a police car!)
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Joined: Tue Apr 28, 2009 8:25 pm
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Location: Colchester
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What number is a Lotus Seven?: 7
Thank you Carrot.
May I take this opportunity to say how wonderful this forum is !
It never ceases to amaze me how much we can learn from it...
RichC


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Tue Mar 23, 2010 4:42 am

 Re: weird flashing headlamps (like a police car!)
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Joined: Mon Sep 03, 2007 4:46 pm
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Location: Calgary Alberta
Andy that's how I wired mine on my dash redo.

I got a replacement column switch from eBay from a Spitfire. The replacement has a second switch for a different function. Had to modify the switch contacts to work correctly. Pull the modified stock towards the wheel and it will flash the driving lamps. There are several models of Spitfire stock switches, so you have to get the correct one, but it is a pretty straightforward mod. Wired the driving lamps to be on only on high beam with dash switch on.

Not sure on the legal issues in the UK, but most moderns have a similar feature connected to the high beam, so figure it's OK here.

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Tue Mar 23, 2010 7:03 am

 Re: weird flashing headlamps (like a police car!)
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Joined: Sat Feb 04, 2006 9:43 pm
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Location: Buckie, Banffshire, Scotland
Well what gave me the idea was when I took my stalk switch apart to clean it I found it had the flash contacts in place awaiting wiring just not got around to it yet

Andy

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