H4 H7 bulb confusion, why do bike manufacturers do this?

[NutsyUk]

My old bike is like this and my new bike is like this too... And it pisses me off.
For my dipped main bulb. The bulb key is for an H7 single beam bulb. But the sodding power socket is a H4! My old bike was like this too but it had adapters on it.
The new bike just had the h7 plug bent to make it just about fit the H4 socket D:

I just got a new bulb to fix what looked like a strange bodge job before I realised what was going on!

Now i have to try and find an adapter socket somewhere... Amazon doesnt appear to have one :/
____________________
Yamaha FZ8/Fazer800 (split headlight one) 2014, gingerly getting used to the massive increase in HP and not killing myself in the process! That was easy to get used to.
Kawasaki ER6F 2007 650 Gonna sell as a project bike!
Lexmoto XTR S 125 Sold!

[NutsyUk]

Managed to get a socket and plug gonna wire up my own adapter :/
____________________
Yamaha FZ8/Fazer800 (split headlight one) 2014, gingerly getting used to the massive increase in HP and not killing myself in the process! That was easy to get used to.
Kawasaki ER6F 2007 650 Gonna sell as a project bike!
Lexmoto XTR S 125 Sold!

[P.]

I doubt the confusion is the manufacturer if I am honest...

[WD Forte]

^
Yeah, sounds like the result of 'owner improvements'
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bikers smell of wee

[NutsyUk]

i dunno, my old one was like this but had OEM socket adapters plugged in.
This one... The plug looks oem to me... just the wrong type for the light
____________________
Yamaha FZ8/Fazer800 (split headlight one) 2014, gingerly getting used to the massive increase in HP and not killing myself in the process! That was easy to get used to.
Kawasaki ER6F 2007 650 Gonna sell as a project bike!
Lexmoto XTR S 125 Sold!

[WD Forte]

Originally it had two single filament two prong H7s,
typically a 55W and 60W one HI one LO

H4's are dual filament 3 prong blubs
Someones been fucking about with it so your choice is to put it back
to stock or carry on 'improving' it, but bear in mind the lighting requirements at MOT time.

Edit:
Also bear in mind the reflector was designed to work with an H7
and may not as well with an H4 which has different element structure
____________________
bikers smell of wee

[NutsyUk]

Ill make sure the light level is correct, but theres nothing against running both left and right lights at the same time on dipped beams right?
____________________
Yamaha FZ8/Fazer800 (split headlight one) 2014, gingerly getting used to the massive increase in HP and not killing myself in the process! That was easy to get used to.
Kawasaki ER6F 2007 650 Gonna sell as a project bike!
Lexmoto XTR S 125 Sold!

[WD Forte]

See my edit
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bikers smell of wee

[NutsyUk]

[NutsyUk]

looking at the service manual...
Spotted what looks like h4 plugs
____________________
Yamaha FZ8/Fazer800 (split headlight one) 2014, gingerly getting used to the massive increase in HP and not killing myself in the process! That was easy to get used to.
Kawasaki ER6F 2007 650 Gonna sell as a project bike!
Lexmoto XTR S 125 Sold!

[stinkwheel]

[A100man]

[NutsyUk]

[A100man]

[MCN]

As Stinkwheel suggests, dicking with different bulb styles invariably dicks with the reflector properties.
The lamp manufacturer carefully design the lamp to accommodate a particular bulb style.

It's no coincidence that different styles do not fit every lamp.

Goe to the bike OEM parts list and take it from there.

Some edjits like to think that they know what they are doing.

One doesn't actually know how much one doesn't know until one realises that there's a lot one doesn't know.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.