Essential for old cars, classic cars, and cars without hazard lights. This is a rare item that is hard to find. I believe it's from the period, so it won't ruin the classic atmosphere when installed. The red switch knob also flashes when the lights are on. The wiring has been renewed and resoldered. As a bonus, I'll include a heavy-duty relay. Operation has been confirmed, but as it is an electronic product, I will not accept claims due to installation errors by the buyer, so please understand that it is non-refundable/non-returnable. I will provide wiring instructions via transaction messages after purchase.