View Full Version : Wiring??
japansie
04-20-2010, 09:14 PM
So I recently bought an '81 Honda 110 and the engine was completely junk.
So I go down to my (not so local) cycle yard to pick up a new engine.
My bike is a CDI and all they had were points engines:mad:. So I bought one (only $100)
fairly new, good compression, etc. So I thought i'd just swap the CDI stuff to the points
engine but nothing, NOTHING, would fit:(. So now i'm stuck w/ points and not enough knowledge
on how to jimmy-rig the wiring together:crazy:.
Could anybody possibly help me out?
A wiring diagram showing how to wire points to a CDI harness would be awesome!!:naughty:
Thanks
atc90
05-03-2010, 12:57 AM
im trying to do the same thing any help guys
tri again
05-03-2010, 07:15 AM
So I recently bought an '81 Honda 110 and the engine was completely junk.
So I go down to my (not so local) cycle yard to pick up a new engine.
My bike is a CDI and all they had were points engines:mad:. So I bought one (only $100)
fairly new, good compression, etc. So I thought i'd just swap the CDI stuff to the points
engine but nothing, NOTHING, would fit:(. So now i'm stuck w/ points and not enough knowledge
on how to jimmy-rig the wiring together:crazy:.
Could anybody possibly help me out?
A wiring diagram showing how to wire points to a CDI harness would be awesome!!:naughty:
Thanks
dont worry.
I have at least 2 of each model from 90 thru 250 and my ultimate fantasy is a couple of 90 points trikes that RUN because theres nothing complicated to go wrong, and can be fixed with a butter knife and a coffee cup.
Those are the ones we take on the far out trips.
juice to the coil, juice to the points spark and fuel.
Have you found a 90 wire diagram yet?
japansie
07-07-2010, 01:43 AM
ah dang! ive been looking at the diagrams and nothing is going to work.
In order for the cdi unit to work it needs a generator to keep the capacitor chraged.
Without a generator im screwed.
But now I know that all I need is a points coil and condenser and it'll fire up.
WilliamJ
07-07-2010, 05:24 PM
There are some wiring diagrams here....
http://www.3wheelerworld.com/oldsite/WiringHonda.shtml
You must already have a small generator built in to the engine to power the points and coil ignition. Either that or you fit a small battery and charge it up after each run (they don't use much power). I think you'll need the correct coil but as drjoe171 says, it should be easy enough to wire up using the wiring diagram for that type of engine.
You need a power wire to one side of the coil which continues to the condenser. The other terminal of the coil goes to ground, as does the body of the condenser. You also need a power wire to go to one side of the points, the other side goes to ground. And that should work!
Bill
EarlyBronocGuy
07-08-2010, 08:36 PM
There are some wiring diagrams here....
http://www.3wheelerworld.com/oldsite/WiringHonda.shtml
You must already have a small generator built in to the engine to power the points and coil ignition. Either that or you fit a small battery and charge it up after each run (they don't use much power). I think you'll need the correct coil but as drjoe171 says, it should be easy enough to wire up using the wiring diagram for that type of engine.
You need a power wire to one side of the coil which continues to the condenser. The other terminal of the coil goes to ground, as does the body of the condenser. You also need a power wire to go to one side of the points, the other side goes to ground. And that should work!
Bill
Maybe bikes/trikes are wired differently from cars, but most points systems use the points to make and break the gound connection to the negative side of the coil. Power (12v) is constantly applied to the positive side of the coil, and as the points open and close, they make and break the circuit to ground, which is what controls the current flow through the primary side (few windings) of the coil - as the current stops and starts, the magnetic field expands and contracts, which is what induces the current flow in the secondary side (lots of windings )of the coil and generates the much higher voltage needed to jump the gap at the spark plug. The condensor is there basically to absorb voltage spikes and keep keep a spark from arcing across the points as they open and close.
If the engine came with a CDI, then it had a Hall Effect "pulse generator" to trigger the coil, and won't have the cam lobes that would rub against the points to open and close them.
WilliamJ
07-09-2010, 02:56 PM
Yes, thinking about it, that is exactly how car points are wired.
The 1979 110 wiring diagram I looked at seems slightly different - it shows the coil being fed by a wire which is common to a wire going to one side of the points, I assumed +ve as other side of points is to ground. The other side of the coil goes directly to ground and the condenser appears to be linking the two coil terminals.
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