Topic: Introduction and CB400F winter project questions

[Tim2005]

take the towel out , I expect it's getting sucked inwards & clogging the airflow.

[bobagby]

take the towel out , I expect it's getting sucked inwards & clogging the airflow.

Will do. Will also get the airbox hooked up properly this week.

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[calj737]

Yeah, bloody hell, you're choking all the air off! Try running around the neighborhood with some grown bloke on your back and his shop towel jammed in your throat. Suspect you'll be sputtering by the end of the drive too 

[bobagby]

Yeah, bloody hell, you're choking all the air off! Try running around the neighborhood with some grown bloke on your back and his shop towel jammed in your throat. Suspect you'll be sputtering by the end of the drive too 

Point taken. I thought it would be better than letting unfiltered air blow in. I'll suspend all future tests until I get the air intake manifold all put back together correctly. Thanks for the input. I'll try and be less of a noob in the future.

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[calj737]

Just pull the towel and go for a quick ride around the block. Bet it will run a lot better

[bobagby]

Just pull the towel and go for a quick ride around the block. Bet it will run a lot better

It'll have to wait til tomorrow. It's dark and I don't have the headlight hooked up yet. I might get my air duct tomorrow, too. Then I can fully hook up the intake

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[bobagby]

So Inez is running nicely. Took her out in the neighborhood a few times and got past the previous throttle issues I was having, so it was time to do the wiring. I have gotten everything to work as expected except the headlight.

History: PO had jumped the blue headlight wire to the brown tail light wire and I thought that was nutty so I removed it in the rewiring process and nothing I tried worked. Even jumping blue headlight wire to one of the browns up front didn't do the trick (). I'm not insane so I decided that if what PO had done worked, I should give it a shot, so I jumped blue headlight wire to brown tail light wire with a long bit of extra wire and it worked.

WHY?

I'll be cleaning up the  wiring next weekend and putting the final beautifying touches on before I go get her registered to ride, but i really just can't get my head around why this is a thing. Next winter I am about 90 percent certain that I will be buying a repro wiring harness and starting over from scratch because I am a glutton for punishment, but I am one of those people who needs to know so I
can sleep at night.

[calj737]

Blue should be for HI, White is for LO.

[MoMo]

Blue should be for HI, White is for LO.

And when you switch from one beam to the other you'll lose your taillight the way you have it hooked up

[bobagby]

I'll have to check that out when I get home. I had it all hooked up and color coded and no head light, but as soon as I jumped those 2 wires headlight on and it switches between hi and lo. I'll check the status of tail light when I get back. A couple other things, when I turn the key to park I get no HL but I do get speedo and tach lights. Could there be a backwards set of brown wires in my ignition switch? The ignition switch was all shades of effed up when I got the bike, I hope to get everything wired properly this weekend and get her registered.

[calj737]

In the Park location, you should get TAIL and Gauge lights only. Its a side-of-the-road emergency stop lighting scheme.

Your key should have 4 wires, RED, BLACK, BROWN, and BROWN/WHITE. BROWN should be for TAIL. BRW/WHT should be for front end gauges, RH switch. BLACK is for switched 12v, coils, KILL/RUN, HORN, etc. RED brings power from the battery.

[bobagby]

In the Park location, you should get TAIL and Gauge lights only. Its a side-of-the-road emergency stop lighting scheme.

Your key should have 4 wires, RED, BLACK, BROWN, and BROWN/WHITE. BROWN should be for TAIL. BRW/WHT should be for front end gauges, RH switch. BLACK is for switched 12v, coils, KILL/RUN, HORN, etc. RED brings power from the battery.

Here's what mine looks like. Any idea about that extra brown?

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[calj737]

Well the "Brown" on the right is a BRW/WHT. Whats the other color with it? It looks like a double tapped connector-

[calj737]

By the way, per this diagram:
http://www.cmsnl.com/classic-honda-fansite/honda_wiring_diagrams/CB400F.jpg

The connector you are holding is further back in the harness than at the key switch. And there should be a second BRW/WHT there leading to the DIMMER switch on the RH controls.

So go back to your KEY switch. You should only have 4 wires coming from it, and it may be a round body plug.

[bobagby]

By the way, per this diagram:
http://www.cmsnl.com/classic-honda-fansite/honda_wiring_diagrams/CB400F.jpg

The connector you are holding is further back in the harness than at the key switch. And there should be a second BRW/WHT there leading to the DIMMER switch on the RH controls.

So go back to your KEY switch. You should only have 4 wires coming from it, and it may be a round body plug.

That definitely doesn't sound like my wiring diagram. My dimmer is left hand control. I use the diagram in the haynes manual and it is showing 2 brown, one brown/white, one red, and one black. I found a pic online of the repro connector and i am about 90% certain I have my brown and brown/white reversed. I'll keep you posted. Thanks for all the info.

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