A while back I complained that my led interior door actuated lights would not shut off. I have a delayed off light unit in the drivers position. The no turn off effect happened after I installed the LEDs. Didn't happen all the time. Doesn't happen now that I have added more LEDs to the circuit (footwell etc). The low current draw must have been playing a game with the delay timer circuit. Alistair
> On Feb 13, 2014, at 1:56 PM, Neil N <musomuso@GMAIL.COM> wrote: > > Hi all. > > This been talked of over on thesamba forum but thought I'd post a few pics here. > > Some, like me, found that an LED festoon dome light (non OEM) might > glow on even when doors shut, dome switch set to "light on when door > opened". The dome lights on a Vanagon are switched on/off via a > connection to vehicle frame (negative side of circuit) > > I saw continuity between points shown by the arrows. Image: > > https://lh4.googleusercontent.com/-nAXrJ_mo4yQ/Uv0ytYaBUHI/AAAAAAAAIz0/5-TgWXJ_BL0/s527/dirty%2520switch%25204.jpgIt > > so I assume that the ground wire male spade on switch passes through > the black plunger as one piece. It is exposed ~ midpoint of the black > shaft. > > My working theory is that with doors closed, switches open, dirt etc. > on one or more of the switch shafts may allow contact between the > exposed metal on the shaft and spring (hence switch frame) or just > straight to the switch body. (constant negative or ground) This may be > especially true since this gap gets very close to the switch metal > frame. > > Just a working theory for now but to me, it makes sense. It's likely > that a very minute amount of current will allow an LED to faintly glow > on (in fact I only saw ~ 4 diodes light up) > > More pics here: > > https://picasaweb.google.com/musomuso/MiscVanagonWestyPics#5979983704673393858 > > Neil. > > > > -- > Neil n > > Blog: tubaneil.blogspot.ca > > '88 Westy http://tinyurl.com/c8rlw6p > > '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/ > > Vanagon VAG *Gas* inline-VR Engine Swap Group: > > http://tinyurl.com/d7gd5ej |
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