Originally Posted by Robert_Nash I'll try to remember to do this tonight...I'm sure the bulb requirement is in the Owner's Manual. Edit: If the intent is to use the rear
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06-11-2009, 06:14 PM | #76 (permalink) | |
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06-11-2009, 08:22 PM | #77 (permalink) |
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Hehe yea I'd be building mine with a PIC as well just so I could customize the system... but what about a simple flasher relay for a quick and dirty system. Has anyone found a rocker switch that will fit in the blank spot on the transmission tunnel between the two heated seat rockers?
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06-11-2009, 09:21 PM | #79 (permalink) | |
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I guess I don't quite understand what you are trying to construct here (although it sounds interesting)!
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06-12-2009, 12:53 AM | #81 (permalink) |
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OK am I missing something here? Is the idea to have the light blink in the simplest/cheapest method possible? If so (although I'm not a relay fan) then wouldn't a standard singal flasher relay be the easiest?
If you want a timer circuit to leave the light on for a period of time use a small cap across the gate on a FET. Once the cap discharges (and the stray capacitance discharges) the FET will shut off - quick and dirty (and cheap and simple too!). Just use a momentary switch to charge the cap up - pico farads will likely be enough unless you want a long on time. |
06-12-2009, 06:59 AM | #82 (permalink) | |
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The bulb for the rear brake light is: 7440 W21W STANLEY 12V 4TQ 2DV I have a feeling, however, that after doing a quick search, this may be a difficult bulb to get in the U.S. - not sure but could be an issue.
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06-13-2009, 03:24 AM | #83 (permalink) | |
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A 7440 bulb should not be difficult to procure in the US. A quick google search shows them available online for $3. While a full blown PIC18 microcontroller could be overkill for this kind of project, an 8-pin PIC16 and a couple of transistors can make this a very small circuit leading to significantly easier installations. A flasher/relay circuit is also an option, and I can build one of those immediately. |
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06-13-2009, 12:56 PM | #84 (permalink) | |
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I was looking online for that bulb as well and found several variants of a 7440; I didn't find an exact match nor did the end connectors look the same as the bulb that came with the rear fog assembly. Of course for testing purposes, that's probably immaterial but if anyone is actually looking for an exact replacement it might signal some difficulty.
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