A watt is the amount of work done when current flows through at a certain voltage. In terms of light bulbs like the # CM93442 CIPA EVO Alfas you referenced, this would be how much light is emitted when the light is installed in a 12V system on a vehicle. The increased wattage itself will not harm the vehicle lighting system. Your concern will be whether the increased amperage would be too much for the circuit to handle.
Comparing a 85W bulb to a 55W bulb, you would be seeing an increase of view full answer...
The 2 replacement 194 bulbs included with the CIPA EVO Formance Spectra H11 Bulbs, # CM93387, are just additional bulbs that CIPA packages with their Spectra bulbs. You could use them to replace the bulbs in your headlight markers, side markers, dash, interior or any light that accepts a 194 wedge bulb.
These lights will definitely be brighter than the factory low beam headlight bulbs on your 2011 Chevrolet Silverado, but it is not going to look like you are driving down the road with your h view full answer...
The CIPA EVO Formance Spectras 9007 Halogen Headlight Bulbs, part # CM93376, draws 65/75 watts of power from the vehicles electrical system. They will emit up to 90/100 watts of light. Their long life, low heat, increased tone and high quality filament will outperform factory headlight bulbs.
Many aftermarket replacement bulbs, both halogens and LEDs, are listed as being - for off-road use only - because they do not necessarily comply with all the guidelines set forth by the US Department of view full answer...