Headlights: low & high beam

[Fan2zee]

Just picked up an 87' R10. It appears my top & bottom head lights are updated to use 9007 H5 bulbs. In which both top & bottom have these bulbs installed. And I have square running lights in the grille.

Question:

High beam, all lights should be on? If so, which lights should be brighter top, bottom, neither?

Low Beam, Top lights should be on?

Should I be running different bulbs in the low beam vs high beam?

Thanks
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[Your41Plague12]

Originally Posted by Fan2zee

Just picked up an 87' R10. It appears my top & bottom head lights are updated to use 9007 H5 bulbs. In which both top & bottom have these bulbs installed. And I have square running lights in the grille.

Question:

High beam, all lights should be on? If so, which lights should be brighter top, bottom, neither?

Low Beam, Top lights should be on?

Should I be running different bulbs in the low beam vs high beam?

Thanks
Posted via Mobile Device

The top lights should be the low beams, the bottom should be the high beams. They should all be on when the high beams are activated, and the lowest of the headlights should be the brightest. The low beams are different from the high beams, they require a 3 prong plug versus a 2 prong.

[Fan2zee]

Originally Posted by Your41Plague12

The top lights should be the low beams, the bottom should be the high beams. They should all be on when the high beams are activated, and the lowest of the headlights should be the brightest. The low beams are different from the high beams, they require a 3 prong plug versus a 2 prong.

Thanks: Too clarify last sentence, low beam = 3 prongs & high beam = 2 prongs?
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[bigwheel15]

Originally Posted by Fan2zee

Thanks: Too clarify last sentence, low beam = 3 prongs & high beam = 2 prongs?
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Right

[Fan2zee]

Originally Posted by bigwheel15

Right

Got It.

Both of my low/high bulbs are identical with 3 male prongs, but the female plugs coming from the truck are wired different. Low beam has 3 wires (one for each prong)? High beam has 2 wires (lacking one wire, making it a 2 prong plug)?
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[motornut]

in the corner of the headlight buckets there is a tab to prevent putting the wrong bulb in
if these tabs arn't bent the high beam lights won't line up right,in the low beam spot
and the same in reverse order

In my pics I've changed the low to the bottom and the high on top
with no issues
just by bending those bucket tabs,and of course you switch the plugs too

I think it would look cool on a lowered truck....

[Fan2zee]

My lights are now in the proper sequence. I think they need to be adjusted due to low beams are aimed too high vertically, which make oncoming drivers think they are brights. And high beams are aimed too low vertically, giving me the improper angle affect in which a high beam should.
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[iceship]

While I would like all 4 dimmer lights on. ..

[motornut]

Originally Posted by iceship

While I would like all 4 dimmer lights on. ..

well the two high lights (2 wire bulbs)would have to be swapped and wired to a second set of lows(3 wire bulbs)
1. not sure if it could handle it's extra power "pull" with out more mods
2.you might get pulled over/checked out more,and flashed from oncoming traffic,since your truck would appear to allways have the high beams on all the time

[iceship]

I'm quite sure my 87 was like that. ...

[motornut]

Originally Posted by iceship

I'm quite sure my 87 was like that. ...

oh, ok my 87 wasn't.

[LONGHAIR]

That would be a perfect place to use relays, but as others have mentioned, it might get you pulled over or at least flashed a lot more often.

I'm not sure that I follow the logic of lowering the lights on a lowered truck though? Lifted truck, yes

Back in the day when the "lift laws" were implemented here in Ohio, headlight height was one of the limitations. Some guys would put covers over the original locations and put the round style regular headlight bulbs into off-road light housings (KC lights)
That didn't last very long though, they came out with frame height measurements based on GVWR after that.