Hey guys, on my 06 Tahoe i planned on putting some better bulbs in than it has currently.
Pretty sure it has Sylvania blue coated bulbs now, and i have to run with the fogs at a minimum to see the road decent. And most of the time i have the highs on even in town.
I can get some 80 watt lows from hella for like 20 bucks. I know ive read about some people having issues with HID conversions melting the harness and relays. You think or know from experience if 80s would do the same?
First off, are the lenses clear and clean? Are the headlights aimed correctly? Is your alternator putting out ~14.x VDC when driving?
The factory wiring is insufficient to get the full use of the 55-watt bulbs, so it'll surely be shorting those 80-watt bulbs. You're gonna need to feed them directly off the battery through a relay harness. Use 12 gauge wiring in the harness and ceramic connectors at the bulbs with 12 gauge pigtails, such as these:
9006 female ceramic headlight pigtail connector 12 Gauge
www.autolumination.com
What may or may not be a problem is that the housings might not hold up to the heat of 80-watt bulbs. I suggest you make or buy the harness (ensure it's 12 gauge or larger) with the ceramic connectors and put it on the Sylvanias first. Hook up one side on the harness and leave the other plugged in like stock to have a side-by-side comparison. This, alone, might be sufficient and you won't have to worry about burning the housings.
After you get the harness and before jumping to the 80W bulbs, you might wanna try running a 9005 bulb (this is the 65-watt bulb in your high beams) in the low-bean spot. It requires very minimal modification to the bulb itself- just trimming a slice off of one of the mounting tabs and removing the tab inside the plug socket. Two minutes with a utility knife with a fresh blade is all it takes. Between the harness and these bulbs, you will have quite an improvement and not have to worry about burning anything.
Also, it's common for higher-wattage bulbs to have a much shorter life than their lower-wattage counterparts. So, don't be surprised if you have to replace the bulbs once every year or two, depending on how much you use them.