Topic: Wiring Help

[PHeller]

So this is where I'm at.

1) I know the bike runs. I had it running, riding (badly), and idling (badly), but it ran!
2) The carbs are now in good shape, but need synced probably. I benched synced them but who knows how close that is.
3) Electricals are all over the place, see below.

So lets start:

Wire nuts on the ignition/key cylinder and on the right side switch wiring (starter button).


The key cylinder uses different colored wiring, I'd like to redo the plug for OEM wiring.


Four wires into one wire nut...and only one wire out? PO didn't know how to hook up the three-way cut-off switch and the start button...


From brown to black...is this normal?


I have no idea where to start with any of this:


I could really use some ideas on what to do with the relays and junk at the back of the bike...they are just hanging loose in there. Some of them look old and questionable as well...

[bollingball]

The first thing to do is tell us what bike this is. Second download the service manual from this site Then it depends if you can read a print.However there is plenty of help here. You will need the print to follow along with the help given

[PHeller]

It's a CB400F, 77' I believe.

I've already have numerous wiring diagrams.

My questions are:

Do I need a voltage regulator if my rectifier is a combo unit?

How does one clean up the stock relay mounting points under the left side panel? I don't want to move the electricals...yet.

Do they make real big shrink tubing so I don't have to use icky sticky electical tape?

I understand electrical stuff, I've just worked very little with it.

 

[MoMo]

Harbor Freight and many other places sell all different sizes of shrink wrap.

1.  The turn signal flasher is an aftemarket, the original would have a rubber  mount strap and mount to the post above it.

2.  Your main fuse has been added probably because the rectifier fried it. Plus, the cover is missing.

3.  There is a cover that goes over the solenoid.

4.  Yes, the brown wire does go into the black.

5.  It seems to me that a regulator would not be needed with the combo unit you have.

Larry

[PHeller]

Any hints on where to source a cheap 6 fuse block? I hate glass fuses.

Starter solenoid cover is lost.

Brown wire into black...gotchya.

I need to dig up instructions how to wire the combo unit up.

[MoMo]

Not all of the six fuse blocks are active, without going out to my shop to check I think only three are active.  I have not done it yet(all three of my CB400f blocks are in good condition) , but from what I gather from this great site many people are wiring in  the new style fuses, maintaining the same amperage of course.  Good luck, Larry

[Spanner 1]

OP... get a wiring diagram and read it/ study it.. it's very easy if you take the time, we can't do that for you.
You have a 33 year old bike, ya might have to do some study ......

[HondaMan]

Also go to www.vintageconnections.com and get the whole connector set for the 400F and the terrific $35 crimpers from Del. They are 1st quality (so is Del!) and will let you do a pro job of it all.

[MoMo]

Hondaman, what is del? Sounds like a good tool, I assume it is much better than the standard crimpers?  Larry

[PHeller]

Anyone know what style the stock plug was for the Honda key cylinder?

[GammaFlat]

Hondaman, what is del? Sounds like a good tool, I assume it is much better than the standard crimpers?  Larry

Del is the guy at Vintage Connections.  Great guy. 

[333]

The tool is somewhat special.  The best way I can describe it is that is a double roll crimp.  Instead of just mashing the connector, it takes the exposed flanges and curls them back to "impale" the wire and insulation.  A pre-installed insulator then slide up to cover the connector(single wire), or the connector then snaps into a nylon plug housing.  With this kit, you can literally rebuild the wiring harness back to stock.

[MoMo]

Thanks for the info on the crimper-I actually had one similar to that back in the wrenching days.  God knows where it disappeared to.  Larry

[PHeller]

I found another place that has multi-wire connector plugs that are more similar to those on my bike at:http://www.vintagecb750.com/products/5/electrical/64/wire-terminals-couplers

I'll use these to reconnect to the aftermarket key cylinder.

I also found a 4 or 6 section fuse block on Amazon for $5.

I want a OEM right side starter/On-Off switch, so I won't worry about wiring up the TEC junk thats on there now.

I think the only area I don't know much about is the headlight bucket.

[MoMo]

www.mrcycles.com has the switch.  I've bought several from them, usually runs about a 100, Larry

[Bodi]

The jumper from brown to black is actually normal (the only thing I see that is!).
This bypasses the lighting on/off switch that was legislated away in North America somewhere around 1974. Honda just made switchpods without this on/off switch but with that jumper tucked into the shrink sleeve for models without the switch (but with harnesses made for it, other markets got the switch). If you replaced the pod with one for a different model (but with identical switchgear) you had to add the jumper pictured to get the lights to work.

[going4speed]

I am getting a 3 circuit solution from http://easternbeaver.com/Main/Products/Fuseboxes/3_Circuit/3_circuit.html

I will use this to replace the fuse block along with rewiring the whole harness to a more modern setup.

The harness I took off the bike is in a million pieces on my work bench in the rework process.

I am also adding the headlight relay kit: http://easternbeaver.com/Main/Products/H4_Kits/h4_kits.html

The connectors I got for everything else came from Del at vintageconnections.com

The sleeving came from Del as well.

I have been contemplating using corvette harness tape to cover the majority of the harness much the same as stock.

I have WAY too much money in the harness for this bike.