Usage Tips:Compatible Vehicle: 2002 2003 2004 2005 2006 Dodge Ram 1500 2500 3500 Pickup Truck Much brighter than Halogen bulb: Built in high power SMD LED chips, best replacement for the old or burnt out bulbs, Low power consuming, low heat and Long-lasting Note:There's light blue film in instrument cluster, it will change white LED into light blue Easy to install: Direct replacement but notice that it has polarity sensitive. Make sure LED bulbs have the correct polarity before putting the instrument cluster back, If LED doesn't light up, take the bulb out and spin it 180 Application: tachometer, speedometer, odometer, fuel level gauge, engine coolant temperature gauge, engine oil pressure gauge, engine battery voltage gauge Package includes: 14 LED Light Bulbs; 1 Year manufacturer warranty since order purchase date; feel free to send email if there's any issue before or after purchase, your case will be taken seriously regardless of warranty period