View Full Version : h4 conversion question

05-14-2008, 02:11 AM
ok guys i just got new e-code h4 housings and im getting some h4 bulbs, but do i need a harness or something or is the stock wire going to work out? oh im not planning on running hid's,.thanks

saw this and made me think if i needed a harness?
http://cgi.ebay.com/ebaymotors/H4-9003-Male-Connectors-Plugs-D2S-D2R-wire-harness-HID_W0QQcmdZViewItemQQcategoryZ36476QQihZ024QQitem Z370048999876QQrdZ1QQsspagenameZWDVW

05-14-2008, 02:20 AM
no its just plug and play, the bulbs have the same 3 prong male end, as the sealed beams

05-14-2008, 02:31 AM
yep, they go in without any sort of mod

05-14-2008, 04:02 AM
awesome.., thanks

05-14-2008, 11:20 AM
whats the wattage? They do sell harnesses for h4 bulbs if you running very high wattage.

05-14-2008, 04:12 PM
i plan on running some 80/90 but are rated at 55/60 so i guess that is ok. yea i was reading up that you can thicker wire to run higher bulbs. all i would need is the harness right?

05-14-2008, 05:28 PM
They sell them as a relay harness so the power gets drawn from the battery.

05-14-2008, 05:50 PM
It's not that the added power requirements are a drain...

It's the heat aspect. You can get high-temp plug in harness to prevent your female connectors from melting, which is an issue i used to have when i was running the 100w Nokya yellows on the white car.

The rest of the car had no issues running those bulbs.

05-14-2008, 07:56 PM
I think he knows that. I was just pointing out they carry relay harness for high wattage bulbs. But that is the reason for them is to protect the stock harness from getting hot and melting. BTW im running my hID on the stock harness believe it or not. they use only 35w so im not worried. The initial startup usually uses the most wattage for startup but once producing a steady light output its only drawing 35w.

05-14-2008, 10:22 PM
Over-wattage bulbs are not a particularly good idea; aside from the heat and wiring issues, it's just that much more of a load on your electrical system.

Safer and easier is the use of high efficiency bulbs, which take advantage of technological advancements gleaned from the H9 and similar design bulbs of recent years.

Basically, they produce more light, in a more effective pattern, than standard halogens. Ultra-high efficiency bulbs produce even more light, but sacrifice filament life to do so.

I'd suggest trying out Philips Premium or Osram Super in your E-code housings.

05-15-2008, 01:28 AM
so lets say i got some high wattage bulbs and decided to get the harness thing. is the product in the link, i posted earlier what i would need? Galcobar i will consider those bulbs. thanks

05-15-2008, 02:03 AM
no what you posted is just the connectors, you would need something like this
(quick google search, not sure of quality or if its the actual one u would need)

05-15-2008, 02:23 AM
^Yep those are them

05-15-2008, 02:45 AM
haha yay me, gatta love google, i guess i could add that i just bought my own H4 convertion off a buddi of mine, and he just made his own harrness, wasnt to hard to do(must clean it up, damn 4x4's)..now i just need to get around to installing them, i got the houseings (bosch) and 3 differnt sets of bulbs for 50$ :bigthumbu

05-15-2008, 05:03 AM
ads28 thanks for the link. post up some pics when you finally put them in.

05-15-2008, 05:25 PM
Will do...I should have some time on my hands after work to get them installed..althou itll still be day light soo wont be much of a before and after shot, we'll see how it goes