Here's dumb question number 1: are H4's interchangable with 9003's both physically and functionally?
As I wade tru old posts, looking for the best commonly available H4 bulbs it becomes slightly confusing. When I hit a link I many times get a picture of a bulb with some (or a lot) of blue tint on it.... and a "slightly" different part number.
I don't need or want "blue", I need and want to get the best overall hi/lo lighting I can commonly find and purchase for my work truck that see's a lot of nightime driving hours, at normal highway speeds on animal infested roads. Elk will ruin my work day : ) and my truck.
These will go in Cibei 7" units wired thru fused relays with 10 ga. (I've got a lot of 10ga. and overkill doesn't bother me) right off the battery of a Dodge/Cummins, in aftermarket buckets on a large bumper/grill guard and are my primary headlights. The factory lights remain, but are never used in day to day driving.
I don't care much about lifespan limitations and will buy 3 sets and keep spares in the glove box if they give me a better view of the nightime world. Changing bulbs is easy on this truck.
Question number 2: which (commonly available today) bulb will maximize the output of my cheap Hella 550's that are aimed slightly at the ditch (where cattle/elk/deer roam early mornings. Again, easy to change so no great concern about lifespan of the bulb beyond I don't want to change them every month if I can help it. Only on with hi beams in rural areas very early mornings.
Both sets of lights are used on off highway right of ways and dirt roads/tracks a significant amount.
As I wade tru old posts, looking for the best commonly available H4 bulbs it becomes slightly confusing. When I hit a link I many times get a picture of a bulb with some (or a lot) of blue tint on it.... and a "slightly" different part number.
I don't need or want "blue", I need and want to get the best overall hi/lo lighting I can commonly find and purchase for my work truck that see's a lot of nightime driving hours, at normal highway speeds on animal infested roads. Elk will ruin my work day : ) and my truck.
These will go in Cibei 7" units wired thru fused relays with 10 ga. (I've got a lot of 10ga. and overkill doesn't bother me) right off the battery of a Dodge/Cummins, in aftermarket buckets on a large bumper/grill guard and are my primary headlights. The factory lights remain, but are never used in day to day driving.
I don't care much about lifespan limitations and will buy 3 sets and keep spares in the glove box if they give me a better view of the nightime world. Changing bulbs is easy on this truck.
Question number 2: which (commonly available today) bulb will maximize the output of my cheap Hella 550's that are aimed slightly at the ditch (where cattle/elk/deer roam early mornings. Again, easy to change so no great concern about lifespan of the bulb beyond I don't want to change them every month if I can help it. Only on with hi beams in rural areas very early mornings.
Both sets of lights are used on off highway right of ways and dirt roads/tracks a significant amount.
