My quick search indicated that the quick flash was normal though. I may=20 have to wire these up to a dedicated battery on a bench to see what it=20 really does. Cheers, -Neil. On 2/17/2015 8:13 AM, Mike wrote: > Randy Dawson hotmail.com> writes: > >> Here's the low-tech, non-electronic fix. The part you want is a "Negati= ve > Temperature Coefficient >> Resistor" a NTC. Put these in series with your lamps, they are availab= le > with a starting resistance of a few >> ohms to hundreds of ohms - for a 12V system pick a range of 20 ohms or > less (or they will never heat up) >> When they do heat up, they go to almost zero. An added benefit, it will > add life to your lamps. >> Randy > This may work for conventional filament lamps, but HID lamps use a high > power inverter (a.k.a 'Ballast') to get sufficient voltage to both strike > the lamp (~15000v) and keep it running after (80v at 1/2 amp or so). > > Any significant resistance in the supply path will prevent the lamps from > starting, in fact the OP's symptoms (initial flash then a re-start) sugge= st > a poor supply or ground, and if this is shared with the ECU then it's not > surprising things are going pear shaped. > > Mike > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .