Honda Twins banner

1 - 13 of 13 Posts

·
Registered
Joined
·
73 Posts
Discussion Starter #1
With age comes experience. With experience comes the understanding of how much ER visits cost. Or even urgent care. Or just regular doctor's visits.

Having read unflattering opinions of the stock Honda CM400 headlight, I decided to upgrade before I got into trouble one night.

There's a few different options out there. But the easiest I found was the Common Motor Collective "3044 Honda CB350 / CB450 K1-K4 Headlight Lens & H4 Bulb Kit". It replaces the stock unit with a reflector and a H4 halogen bulb. It even has a nifty parking light.

Ignore the listed models, and look at the part number: "33120-333-670". That's the OEM bulb's part number for the 1981 CM400 series. I'm not the first one to do this (I believe someone else has done it here), but here's a quick outline on how to do it:

  1. Remove the old headlight and shroud. The two Philips screws holding the headlight in have a ferrule that goes through the plastic of the headlight bucket - make sure not to lose these (mine were loose). If the headlight seems stuck, try rotating it slightly. There's a lip at the top of the headlight, so you don't want to pull the headlight strait out.
    IMG_20190322_194652992.jpg
  2. Follow the video guide on Common Motor Collective's website to install the new light in the shroud. It may be useful to mark the top of the headlight somehow so it is orientated correctly. Ignore the connector that CMC ships - the stock connector works. Add the rubber (water-resistant?) shroud to the back of the light.
    IMG_20190322_202737662.jpg
  3. I didn't want to lose the (now unused) stock fasteners and headlight adjustment, so I reinstalled those and wrapped the back of the screws with some electrical tape so nothing would rub in the housing.
  4. In the headlight bucket, there's already two unused wires for the parking light. One should be brown and the other is green. Verify with a multimeter.
    IMG_20190322_195744463_HDR.jpg IMG_20190322_195754086.jpg
  5. Spend some time organizing the wiring in the bucket, pushing it to the sides, to make room for the new headlight.
  6. Plug everything in and reinstall the headlight and shroud. I use small needle nose pliers to reconnect bullet connectors.
    IMG_20190322_203529618.jpg
  7. Test everything.
    • Ignition off - no lights.
    • Ignition set to parking lights - tail light and headlight parking light are on.
    • Ignition to on - headlight, tail light, and running lights.
    • Test left and right turn signals, front and back.
    • Test low and high beams.
  8. That's it.
    IMG_20190322_221256296.jpg

Quite happy - the halogen H4 bulb does seem brighter. There's an LED option for $50 more. For those who are, or those who need more power for other accessories, check it out - the stock incadescent bulb is 35W/50W, the replacement halogen is 35W/35W, and the LED upgrade is only 20W, so it should free up another amp or so.
 

·
Registered
Joined
·
62 Posts
Look up Jeep led headlights. It was as simple as unplugging my cm400 headlight and plugging the new one in
 

·
Registered
Joined
·
62 Posts
Yea it was really plug and play. Even got the little left to right adjustment screw to work. Although a lil tight in the housing with the other wiring but it all fit nice. And people think my low beam is now my high beam lol
 

·
Registered
Joined
·
28 Posts
Just following up on this--how is that Jeep headlight working out for you? I'm wanting to upgrade the headlight on my 1978 CB400 Hawk, and thinking you may have hit upon the solution.
 

·
Registered
Joined
·
7 Posts
@saganaga, you said this works for a 1981 CM400 series, and I'm new to anything with these (or any bikes). This should work fine with the stock 1981 CM400T, right?

I've already bought two halogen replacements to find that they were not the correct fitment for my bike.
 

·
Premium Member
Joined
·
10,203 Posts
That's correct. Same headlight for all these bikes:

This Honda 33100-413-671 HEADLIGHT ASSY. fits the following models and components:
Honda Motorcycle 1983 CB450SC A - NIGHTHAWK 450 Headlight
Honda Motorcycle 1982 CB450SC A - NIGHTHAWK 450 Headlight
Honda Motorcycle 1980 CB400T A - HAWK Headlight
Honda Motorcycle 1979 CM400A A - HONDAMATIC Headlight
Honda Motorcycle 1980 CM400E A Headlight
Honda Motorcycle 1981 CB400T A - HAWK Headlight
Honda Motorcycle 1980 CM400T A Headlight
Honda Motorcycle 1979 CM400T A Headlight
Honda Motorcycle 1982 CM450E A Headlight
Honda Motorcycle 1982 CM450A A - HONDAMATIC Headlight
Honda Motorcycle 1981 CM400A A - HONDAMATIC Headlight
Honda Motorcycle 1986 CB450SC AC - NIGHTHAWK 450 Headlight
Honda Motorcycle 1986 CB450SC A - NIGHTHAWK 450 Headlight
Honda Motorcycle 1978 CB400A A - HAWK HONDAMATIC Headlight
Honda Motorcycle 1981 CM200T A - TWINSTAR Headlight
Honda Motorcycle 1981 CM400C A - CUSTOM Headlight
Honda Motorcycle 1978 CB400TI A - HAWK II Headlight
Honda Motorcycle 1978 CB400TII A - HAWK I Headlight
Honda Motorcycle 1985 CB450SC A - NIGHTHAWK 450 Headlight
Honda Motorcycle 1985 CB450SC AC - NIGHTHAWK 450 Headlight
Honda Motorcycle 1982 CM450C A - CUSTOM Headlight
Honda Motorcycle 1982 CM200T A - TWINSTAR Headlight
Honda Motorcycle 1983 CM450A A - HONDAMATIC Headlight
Honda Motorcycle 1979 CB400TII A - HAWK II Headlight
Honda Motorcycle 1982 CB450T A - HAWK Headlight
Honda Motorcycle 1983 CM450E A Headlight
Honda Motorcycle 1980 CM400A A - HONDAMATIC Headlight
Honda Motorcycle 1979 CB400TI A - HAWK I Headlight
Honda Motorcycle 1981 CM400T A Headlight
Honda Motorcycle 1981 CM400E A Headlight
 

·
Registered
Joined
·
7 Posts
Thanks, JT. Looks like CMC is out of stock on the head light, but I just saw another post about the Candlepower p#802212 that looks like it should be a fit as well.
 

·
Registered
Joined
·
3 Posts
With age comes experience. With experience comes the understanding of how much ER visits cost. Or even urgent care. Or just regular doctor's visits.

Having read unflattering opinions of the stock Honda CM400 headlight, I decided to upgrade before I got into trouble one night.

There's a few different options out there. But the easiest I found was the Common Motor Collective "3044 Honda CB350 / CB450 K1-K4 Headlight Lens & H4 Bulb Kit". It replaces the stock unit with a reflector and a H4 halogen bulb. It even has a nifty parking light.

Ignore the listed models, and look at the part number: "33120-333-670". That's the OEM bulb's part number for the 1981 CM400 series. I'm not the first one to do this (I believe someone else has done it here), but here's a quick outline on how to do it:

  1. Remove the old headlight and shroud. The two Philips screws holding the headlight in have a ferrule that goes through the plastic of the headlight bucket - make sure not to lose these (mine were loose). If the headlight seems stuck, try rotating it slightly. There's a lip at the top of the headlight, so you don't want to pull the headlight strait out.
    View attachment 278150
  2. Follow the video guide on Common Motor Collective's website to install the new light in the shroud. It may be useful to mark the top of the headlight somehow so it is orientated correctly. Ignore the connector that CMC ships - the stock connector works. Add the rubber (water-resistant?) shroud to the back of the light.
    View attachment 278152
  3. I didn't want to lose the (now unused) stock fasteners and headlight adjustment, so I reinstalled those and wrapped the back of the screws with some electrical tape so nothing would rub in the housing.
  4. In the headlight bucket, there's already two unused wires for the parking light. One should be brown and the other is green. Verify with a multimeter.
    View attachment 278154 View attachment 278156
  5. Spend some time organizing the wiring in the bucket, pushing it to the sides, to make room for the new headlight.
  6. Plug everything in and reinstall the headlight and shroud. I use small needle nose pliers to reconnect bullet connectors.
    View attachment 278160
  7. Test everything.
    • Ignition off - no lights.
    • Ignition set to parking lights - tail light and headlight parking light are on.
    • Ignition to on - headlight, tail light, and running lights.
    • Test left and right turn signals, front and back.
    • Test low and high beams.
  8. That's it.
    View attachment 278158

Quite happy - the halogen H4 bulb does seem brighter. There's an LED option for $50 more. For those who are, or those who need more power for other accessories, check it out - the stock incadescent bulb is 35W/50W, the replacement halogen is 35W/35W, and the LED upgrade is only 20W, so it should free up another amp or so.
I just performed the H4 upgrade on my 82 CB450SC following your instructions. Everything works just like you said it would.
Thanks for the detailed write up.
 
1 - 13 of 13 Posts
Top