The H in H4 when thinking about a lamp would mean a halogen headlamp. So when stocks people are looking for specific bulbs for their customers they should know to look in the car head lamp section of the store when asked for a bulb starting with the letter "H".
From under the hood behind the headlight you can see where the bulb snaps in un snap it pull it out and there's your bulb, get the number off of it and replace , cost about $10 , I did this about two months ago...
Hello all...I have just recently replaced all the dash/instrument lights in my '92 previa GL..the instrument cluster has 4 retaining screws to remove ( after you take off the heater/radio surround and the cowling over the intrument cluster) and then you gently pull the whole unit toward the steering wheel, be careful as it is attached to a steel wire underneath, so that you don't pull all the wires out of the back !!Reach behind or get out and have a look through the screen and you will find 3 large, 1/4 turn, bulb holders. A gentle twist and pull out reveals a D501 pattern bulb...I have replaced mine with BLUE NEON ones from Halfords ( �6.99 a pair ) and they look absolutely wicked.I then went on to replace the heater, cigar lighter and ashtray bulbs with blue 'pea' led's ( they work one way round and not the other...trial and error but you can't blow the bulbs..).The only ones that I haven't been able to source in blue yet are the real tiny ones that fit in the various switches...I'll post again once I find some or solve the problem in some other way.If anyone knows where I might get some...? Please let me know.
h4
H4
It is a "style" of a light bulb. Click the link below for an example.
Change the whole headlamp bulb. Should be a H4.
The lenght of a H4 HID Bulb is about 4 cm from the tip of the bulb to the en of the bulb where it enters the docking plate
See H3 Image and H4 Image below in sources and related links.
Halogen H4 55 Watts bulb.
they are H4
Yup they sure do 9003/ h4 fits a 94 civic
H4
The Aygo uses a H4 type of bulb
Pull it out loosen the four screw and you will see the bulb I beleive it is h4 bulbs