Hi. I'm new here, joined in the hope to get some help and hopefully learn a lot about 2 strokes. I inherited a 88FZ600 with a 76 RD400 newly rebuilt, never started motor. I believe this will turn out to be a fun build and a very nice, different bike to ride around in. I was hoping for your expertise in getting me a list of the electrical parts I'm going to need. Don't have much experience in 2 strokes except riding dirt bikes. Have 2 street bikes, 4 strokes which I have been doing all the mechanical work for. The bike has the wiring harness, which I know will have to be adapted.
So battery, coils, fuse box, points, condenser, reg/rectifier (?), 2 stroke oil tank.
I'm sure there's something else I need. Thank you for your time.
When I figure out how to post pictures I will.
As I mentioned in prior post. I am putting a fresh rebuilt 1976 RD 400 in 88 FZ600U frame. Motor mounts are all done. One problem is I have a box of electricals from both bikes and don't know which is for what or where they go. If anyone can help me sending a picture of these items on a RD400 frame it would definitely help figuring which ones belong to the RD. Thanks.
there's a wiring diagram on the tech library for sure. for 400s.
I've done an rd motor in a ninja frame a long time ago, wiring was pretty easy.
usually the forum isn't this glitch just fyi
If you have complete wiring harnesses for both FZ and RD, I would think the FZ harness would have mostly multi-pin connectors vs the RD which would be mostly bullet connectors. Hope this helps!
Thank you all for the great ideas. Maybe I'm making it worse, but my concern is where the original electrics were mounted on the FZ and in the RD and what do they look like, as I have a box full of mixed items, so I can sort the pieces that I have.
Any ideas will help as I am new at this. Thanks again.
I would think you'd want to use the RD harness for your build as that will match up with the charging system of the motor. If you go on the Partzilla website and search for the correct year Yamaha RD400 and the Electrical page you'll get a detailed parts fiche with pics of the various components.
https://www.partzilla.com/catalog/yamaha/motorcycle/1976/rd400c/electrical
Hope this is helpful. Another option would be for you to post pics of the parts you can't identify and the forum will chime in. Good luck with build!
Thanks Blue for pointing out that parts fiche. The picture is pretty explanatory of the parts I need.
When I figure out how to post pictures I will.
you cna use all the stock rd charging ignition stuff. its gets different if you have an aftermarket cdi ont he 400 motor in some ways, a lot easier. i assume the ignition/charging on the 400 motor is stock?
The wiring for these 70s style bikes are pretty basic. Definitely need a battery for these things unless you get a vape or hpi system, but a small alarm battery will work well.
Yes m, the motor is a completely stock rebuild.
I'll definitely get it started with a premix just to be sure. Then i'll make sure pump is working correctly. Maybe further down the line I'll get information on either a hpi or vape system.
Thanks again for the insight.
yeah as long as you use an rd400 regulator/rectifier, all the motor needs is 12v to the coils to run. the fz uses a cdi and a different reg/rectifier (obviously). thats important because I think the fz system key and kill work by grounding the ign circuit to kill the motor. imho, the easiest way around that is use a relay to power the coils using a a switched ground wire to control it. beyond that, you just need a switched 12v source and a direct lead from the regulator to the battery. the rest, you can use the stock fz harness. the tach on that is.. electronic? if so, prob wont work. however, if its cable,, the ratios will be the same. good luck w it. these are the fun ones for sure.