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Emergency lighting and Sirens For discussion of emergency lighting and sirens as they are associated with Professional Cars. Posting in this forum is limited to PCS Members and / or Site Supporters. We encourage all website users to become members of the Professional Car Society and / or become Site Supporter.

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Old 01-18-2018, 11:13 PM
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Kurt Arends Kurt Arends is offline
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Default What is this bulb??

2 of these arrived with the box lot that I just purchased. What are these bulbs?
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Old 01-18-2018, 11:38 PM
Paul Steinberg Paul Steinberg is offline
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High beam or spotlight assembly, with a H-4 replaceable type halogen bulb. You have to wipe any traces of finger oil off the bulb with denatured alcohol, and only handle it from the base. The tab at 8 o'clock is the grounding tab. The white wire is the hot lead. Very bright, and usually found on high end European vehicles. In the old days, we called them "flame throwers", since they would light up the road for a long distance in front of you. They were like a pencil beam light.
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