{"product_id":"auto-lamp-chicago-model-491-backup-lights-pair-nos-clear-beehive-lens-chrome","title":"Auto Lamp Chicago Model 491 Backup Lights Pair NOS Clear Beehive Lens Chrome","description":"\u003cp\u003e\u003cstrong\u003eA matched pair of Auto Lamp beehives, never mounted, never wired.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAuto Lamp Company of Chicago made accessory lighting for decades, and the beehive is their best-looking piece — a stepped, domed clear lens in a chromed ring, small enough to look right on a bumper or a valance without shouting. This is a pair of \u003cstrong\u003eModel 491\u003c\/strong\u003e lamps in new old stock condition: unmounted, unwired, no scratches on the plating and no chips in the lenses.\u003c\/p\u003e\n\u003cp\u003eThe lens rings are embossed \u003cstrong\u003eAUTO LAMP – CHICAGO – MODEL 491\u003c\/strong\u003e on the top and \u003cstrong\u003eSAE PI R 68\u003c\/strong\u003e on the bottom. That SAE string is worth reading properly, because it tells you what these are certified for: under SAE J759, \u003cstrong\u003eR\u003c\/strong\u003e is a reversing (back-up) lamp, \u003cstrong\u003eP\u003c\/strong\u003e is a front position lamp and \u003cstrong\u003eI\u003c\/strong\u003e is a turn signal. So they're back-up lamps first, but the certification covers all three uses — which gives you options on a custom build.\u003c\/p\u003e\n\u003cp\u003eThe lenses are \u003cstrong\u003eglass\u003c\/strong\u003e, not plastic — worth knowing, because by the late 1960s plenty of accessory lighting had gone to acrylic and glass holds up better and looks right. Each lamp measures \u003cstrong\u003e2-5\/8 inches across the mounting base\u003c\/strong\u003e, with the glass standing about \u003cstrong\u003e1-3\/4 inches\u003c\/strong\u003e proud of the bezel.\u003c\/p\u003e\n\u003cp\u003eBoth lamps come with their \u003cstrong\u003erubber mounting pads and the mounting hardware\u003c\/strong\u003e, so it's a complete pair ready to go on a car rather than a pair of orphaned lenses.\u003c\/p\u003e\n\u003cp\u003e🔧 \u003cstrong\u003eFeatures and Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🎯 \u003cstrong\u003eAuto Lamp Company, Chicago — Model 491\u003c\/strong\u003e, a matched pair\u003c\/li\u003e\n\u003cli\u003e📦 \u003cstrong\u003eNOS — new old stock.\u003c\/strong\u003e Never mounted, never wired, never installed\u003c\/li\u003e\n\u003cli\u003e💡 \u003cstrong\u003eCertified as a back-up lamp (SAE R)\u003c\/strong\u003e, and also for front position (P) and turn signal (I) use\u003c\/li\u003e\n\u003cli\u003e🔍 \u003cstrong\u003eGlass lenses\u003c\/strong\u003e — clear, stepped beehive profile, not plastic\u003c\/li\u003e\n\u003cli\u003e✨ Chromed rings, bright plating throughout\u003c\/li\u003e\n\u003cli\u003e📏 \u003cstrong\u003e2-5\/8 in. across the mounting base\u003c\/strong\u003e, glass projects about \u003cstrong\u003e1-3\/4 in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e🔨 \u003cstrong\u003eComplete with 2 rubber mounting pads and 4 mounting bolts with nuts\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e🏁 \u003cstrong\u003eUniversal accessory mount\u003c\/strong\u003e — not vehicle-specific, fits where you put it\u003c\/li\u003e\n\u003cli\u003e🔌 \u003cstrong\u003eThe bulb you fit sets the voltage\u003c\/strong\u003e — wire them to whatever system your car runs\u003c\/li\u003e\n\u003cli\u003e🔎 Embossed \u003ccode\u003eAUTO LAMP - CHICAGO - MODEL 491\u003c\/code\u003e and \u003ccode\u003eSAE PI R 68\u003c\/code\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e🚗 \u003cstrong\u003eKnown Fitment and Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal accessory lamps.\u003c\/strong\u003e They mount to a bumper, valance, apron or panel using the supplied bolts and rubber pads — no vehicle-specific bracket required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront, rear or anywhere you need light.\u003c\/strong\u003e The SAE certification covers back-up, front position and turn signal use, so these are equally at home as reverse lamps, parking lamps, turn signals or auxiliary lighting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo fixed voltage\u003c\/strong\u003e — these are lamp housings, and the bulb you fit determines whether they run 6V or 12V. They'll work on whatever your car runs.\u003c\/li\u003e\n\u003cli\u003eHot rod, custom, kustom, bomb, truck and trailer applications, and period-accessory restorations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOn dating these, straight up:\u003c\/strong\u003e the \u003ccode\u003e68\u003c\/code\u003e in the SAE marking is the certification year under SAE J759, which points to 1968 or later. You'll see these listed elsewhere as 1950s — the styling invites it — but the marking is the only hard evidence on the part, and it says what it says. They're described here as vintage accessory lamps without a decade attached. If you know these better than the marking suggests, I'd be glad to hear it.\u003c\/p\u003e\n\u003cp\u003eAdditional applications beyond those listed may exist.\u003c\/p\u003e\n\u003cp\u003e✅ \u003cstrong\u003eCondition Summary\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNew old stock and flawless. The plating is bright with no pitting or scratches, the glass lenses are clean with no chips or cracks, and neither lamp has been mounted or wired. \u003cstrong\u003eThey have not been tested or disassembled\u003c\/strong\u003e — they've simply never been hooked up, so whether bulbs are fitted is not confirmed. Sold as-is on that basis. All mounting hardware is present. Please look through the photos.\u003c\/p\u003e\n\u003cp\u003e📋 \u003cstrong\u003eBuyer Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGo through the photos before buying — the lenses, the plating, the embossed markings and the included hardware are all shown, and the photos are part of the description. These are universal accessory lamps, so confirming they suit your application and your electrical system is the buyer's responsibility, and other uses may exist beyond those listed. Untested and sold as-is. Questions are welcome before purchase. If you're building something that needs period lighting, there's more in the store worth a look.\u003c\/p\u003e","brand":"Auto Lamp","offers":[{"title":"Default Title","offer_id":45835684151349,"sku":"AUTOLAMP491","price":86.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2350\/7867\/files\/20260728_191918.jpg?v=1785372369","url":"https:\/\/flatbrokespeed.com\/products\/auto-lamp-chicago-model-491-backup-lights-pair-nos-clear-beehive-lens-chrome","provider":"Flat Broke Speed","version":"1.0","type":"link"}