<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body><div><div style="font-family: Calibri,sans-serif; font-size: 11pt;">Thanks, Jim. I wondered how the bulb failure system worked. Further research is indicated.<br>Dave</div></div><div dir="ltr"><hr><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">From: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;"><a href="mailto:jadney@vwtype3.org">Jim Adney</a></span><br><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">Sent: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;">04/11/2017 15:15</span><br><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">To: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;"><a href="mailto:type3@vwtype3.org">type3@vwtype3.org</a></span><br><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">Subject: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;">Re: [T3] Lights</span><br><br></div>On 4 Nov 2017 at 1:04, Dave Hall wrote:<br><br>> I see that there are special flasher units for LED turn signal lamps -<br>> presumably as the old relay no longer senses the larger load that was<br>> provided by the filament lamps. The alternative seems to be adding a ballast<br>> resistor to mimic the filaments. Anyone confirm that? <br><br>There are 2 aspects to this:<br><br>A resistor would give the load that an operating bulb would draw and make <br>an old fashioned (the kind with a thermal heater) flasher run at the proper <br>speed.<br><br>But our flashers, at least the 12 V ones, have another feature that senses <br>that a bulb has burned out and flashes faster then. This is because a <br>tungsten filament draws a LOT more current when it's first turned on and is <br>cold. The initial currrent is 4x-8x as much as the normal operating current. <br>Our flashers sense this overcurrent and use that to trigger the normal flash <br>rate. A resistor won't do this.<br><br>-- <br>*******************************<br>Jim Adney, jadney@vwtype3.org<br>Madison, Wisconsin, USA<br>*******************************<br><br>_______________________________________________<br>VWType3.Org mailing list - type3@vwtype3.org<br>To unsubscribe or change subscription options, visit:<br>http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org<br>If you need more help, contact: gregm@vwtype3.org<br></body></html>