Archived Message
Boot interior lamp
Now I'm not very good on electrics. I've owned my RV8 for some 12 months, and I noticed that the interior boot lamp never worked since purchase of the car. So I removed the plastic unit, and to my surprise it was disconnected. I replaced the bulb, and reconnected the wiring lead, and lo & behold it worked. 24 hrs later I went to the Northern Nationals (last Sunday) at Pateley Bridge, drove home and parked the car in the garage. I wanted to use the car today (Thursday following the Sunday) and the battery is flat. I now suspect the lamp unit was disconnected by a previous owner because there was a problem. Does the boot lid when closed operate a switch which cancels the power to the boot lamp, and if so where is it? I can't find it. But - I would like to solve the problem. By the way, the battery is quite new, and it is a coincidence that it should discharge just when I get the previously disconnected boot lamp to work.
Godfrey Dennis
09/08/2012 @  21:27
Under topic: RV8
 
Archived Reply(ies) received for this Message
Boot interior lamp
The switch for the boot light is part of the boot lock located on the rear beaver panel.
You will find a contact arm that does the switching when the lid is opened.If the car is to be left at a show etc for a long period a slip of paper between the contacts will turn the light off and avoid draining the battery.

Have had cars in the workshop that have been fitted with a cut out switch on the rear carpet board to do this very job.
Stuart Ratcliff
10/08/2012 @  05:57
 
Boot interior lamp
Godfrey,

I had a similar problem with #590's lamp. I took the trim apart in the area of the switch, removed it and figured out how it works.

Memory isn't what it used to be but fortunately, I did take photos of the process. If you want to see what the mechanism looks like, drop me a note at sdaustin at shaw dot ca

IIRC, my switch's issue was a ground tab that was out of alignment and wouldn't activate the lamp with the boot lid open.

What might be happening with your switch is this metal tab isn't be moved when the lid is closed thus keeping the lamp illuminated and draining your battery.
Simon Austin
10/08/2012 @  13:19
 
Boot interior lamp
The question arises as to how can one see whether the lamp goes off when you lower the boot lid. One way would be to put your camera in the boot with the flash off but on timer facing your lamp. Close the lid and wait, in trepidation and expectation, and then open up again after the said time lapse. You should then be able to see if the light remained on. However, having said that, I think the suggestions made by Stuart and Simon will find the cause of your problem, Godfrey.
Peter Garton
10/08/2012 @  15:44
 
Boot interior lamp
Peter
An even easier way of telling if the lamp is on is to look at the tell tale light on the dashboard switch as it lights up when the boot light is on, even if the ignition is off.
Stuart Ratcliff
10/08/2012 @  16:32
 
Boot interior lamp
Many thanks, Stuart I'll have to take a look. Since I never leave the boot open I wasn't aware that the dashboard switch on the RV8 actually lit up.
Peter Garton
10/08/2012 @  22:40
 
Boot interior lamp
Gents - I have established quite clearly that the interior boot light does stay on when I close the boot lid, so that to me is the reason why the battery discharged. I have examined the bbot locking mechanism from the top, and can see wiring going into it, but I cannot see what Stuart describes as the contact arm. I'm going to remove the unit early next week to examine it properly, and I'm sure from what information you have given me, I'll be able to solve the problem. Thank you all for your help.
Godfrey Dennis
11/08/2012 @  05:46
 
Boot interior lamp
Received your email, Godfrey. Photos will be enroute shortly.
Simon Austin
12/08/2012 @  01:18
 
Boot interior lamp
I got out the RV8 yesterday because the sun was shining brightly and so we wanted to drive down the Mosel for our usual wine and Schnitzels. Anyway, Stuart, you were quite correct, the light does come on on the dashboard even with the ignition off when one opens the boot. I assume that it won't work when the bulb has gone. If Godfrey's boot light did not switch off, I'm not quite clear whether the dash light in his case would remain on with the boot closed, although I fully understand the thread from Simon which looks into the mechanisim itself.
Peter Garton
12/08/2012 @  14:34
 
Boot interior lamp
Peter
You might find this odd, but I've never really noticed the red light above the boot lid switch on the dashboard. I don't think I've ever used the boot lid switch to open the boot, I've always done it by key. However, the boot lid switch works perfectly. Whilst I have not as yet taken the boot lock mechanism off to examine it, my battery is re-charged. I switched the ignition on, and operated the boot light switch on the dash board to open the boot. No red light, so clearly there's another bulb to replace. Had that red light stayed on previously, I would have course known there was a problem. At the moment therefore I can't answer your question. Does the red light stay on if the boot interior light remains on. Personally, I would have thought the red light would stay on only in the event of the boot lid being slightly or fully open. I trust you will have enjoyed your wine & Schnitzels yesterday. I had a very pleasant day at the MG race meeting at Oulton Park yesterday in nice weather, for a change. The RV8 unfortunately stayed at home in the garage, as I didn't have enough time to get it fettled for the day. Met Hugh Boddington and his wife at the meeting, with their nice Nightfire Red RV8.
Godfrey Dennis
12/08/2012 @  18:17
 
Boot interior lamp
Actually Godfrey you could well have slightly misunderstood what we meant by the light on the dashboard. It isn't red and is incorporated within the switch itself and the white light is a sort of slit. It goes on when you open the boot irrespective whether you switch it on or have the ignition on. It opens the boot remotely, but only when you have the ignition on! The red light is your anti theft warning which blinks when you activate it. Apologies, if this is already obvious to you.
Peter Garton
12/08/2012 @  22:41
 
Boot interior lamp
Peter - you are quite right. I thought the red light was the light to indicate whether or not the boot lid was open. I have the RV8 repair manual which is pretty comprehensive, but it does not show the red light above the boot release switch on the dashboard. I wonder why? Simon has sent me some great pictures of the boot release mechanism, and I will be examining mine in the next few days. So I'll report back with my findings, and hopefully I'll resolve the problem. By the way, I've had great fun with the car. Oxford Blue, 1610, and I will never sell it.
Godfrey Dennis
13/08/2012 @  05:08
 
Boot interior lamp
I just had a look in the service manual and couldnt find any reference to the light above the boot release switch.

The Owner's handbook does show the light on page 10. As mentioned, it is the anti-theft light.

I haven't tested the dash switch light yet but my guess is this particular light illuminates to tell the driver that the boot lid is open, not that the boot lamp is lit.

I'll test that theory by removing the bulb and see if the dash switch light still illuminates.

I love trouble-shooting. :)
Simon Austin
13/08/2012 @  14:24
 
Boot interior lamp

I'm not familiar with RV8 wiring but I would think that production economy would dictate a single sensor on the boot lid which activated when it opened so causing the boot interior light AND the dashboard switch warning light to illuminate. On that basis I would expect that a faulty sensor mechanism would cause the warning light to also be on if it left the boot light on with the lid closed...
Bob Owen
13/08/2012 @  18:32
 
Boot interior lamp
With the benefit of Simon's pictures, and other members' comments, I removed the boot locking mechanism this morning, although strictly speaking I can see you don't have to. The metal tab switch mechanism is quite primitive, and with the boot latch in either the open or closed position, the metal tab was still making contact with the spindle and completing the circuit. An easy adjustment with the screwdriver did the trick and all is well now. I ran a digi camera in video mode in the boot 2 or 3 times to check that the interior boot light did go out when the boot lid was closed. I also removed the boot release switch on the dashboard because there was no sign of a light within the switch, as Stuart & Peter had mentioned. On close examination I could not see a bulb or diode, and I have come to the conclusion that there is no bulb in my switch. It seemingly cannot be dismantled, without breaking something, so I'm puzzled about the light on the switch. Could be that on later cars there was no light? The switch operates the boot release solenoid perfectly. In any case I'm not too bothered about the dashboard switch as I don't use it. Many thanks for all your help.
Godfrey Dennis
13/08/2012 @  20:29
 
Boot interior lamp
I'm very relieved that you appear to have now solved your problem, Godfrey. A thought just occured to me. If the predecessor owner disconnected the boot light, did he also change the switch in his search for a solution? As you say, this switch is quite simple really but it does have a light within it. I wonder if the tiny light bulb has been removed from inside the switch.
Peter Garton
13/08/2012 @  22:26
 
Boot interior lamp
Yes Peter - I've had the switch out again, and indeed there is a tiny bulb. Victor sent me a picture of the switch from the workshop manual, and it all became clear. The bulb has gone, and I'll try and source a new one from B&G hopefully.
Godfrey Dennis
13/08/2012 @  23:57
 
Boot interior lamp
Oh, well done, Godrey! Now it looks as if you are all set to go again.
Peter Garton
14/08/2012 @  00:45
 
Boot interior lamp
Good work, Godfrey! Glad to hear you have it sorted out.

As you say, that metal tab is a bit primitive but I suppose simpler is better...especially when it comes to cost. ;)

I put together a Work Shop note with the same photos I forwarded to you. Victor has them so hopefully we'll see them up on the Register shortly.
Simon Austin
14/08/2012 @  02:13
 
Boot interior lamp
The workshop note from Simon will be posted later today as overnight he has sent over a few more photos which can be added to the note. In the meantime I have posted the first page of that note with the useful comparative photos of the RV8 boot lock taken by Godfrey Dennis showing the light switch in the "on and the "off" positions so fellow members can see how the contact works to switch the boot light on and off. You can see the A4L PDF document via the link on the Recent Changes log at: http://www.v8register.net/subpages/websiteupdatelog.htm
V8 Webmaster
14/08/2012 @  17:04
 
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