I need readable '93 (gsf400P) wiring diagrams

[Chris H]

Hi Bmax, i think you right! i think the boxs are for show n they just set the resistace so the cdi thinks it is in a low gear, but do you know anything about the diffrent timing on certain US models? its like 7 degrees instead of 15 which sounds way wrong to me, my bros lambretta runs more!!

[Banditmax]

I think thats calafornia only models if you read closely. And yeah it's only to do with emissions and will be controlled via a different wheel on the crank i think.

[Chris H]

Dont kno how the timing curve comperes at the top end,but if it stays so close to T.D.C then these will be flat!!

[Banditmax]

Im not sure really. But then again i don't know anyone with the calafornian model to know how slow they are. But to be honest i think they must be slower.

[Chris H]

Must be to give the harleys a chance lol!!

[Chris H]

Hi Viz, this is the wire on my bike, the top end bolts to your frame then the end with the resistor 1.5k ohm is crimped into the loose splade connector, then this via another connector is fastened to the green/yell wire that comes out of your main loom near the battry. the gear selector sensor gives diffrent resistances in low and high gears and im sure this mod just tricks the cdi into thinking the bike is in a low gear, mayb Jay has a info from racing the gsxr?

[gsxr400 racer]

Nope derestricted mine the hard way went to a earlier harness that runs the 2 wire cdi

[Vidrazor]

So you're saying that if I just cut this cable here:



...and attach a 1.5k resistor to it coming from the ground I bypass the restricter? Sounds too easy to be true. You have this on your bike and it works? If so, I wonder if it would be this easy on my American model.

[Banditmax]

No need to cut it there when theres a connector a bit further down your loom around the battery area where you can unplug it. And im not sure on 1.5k ohm or 1k ohm what i would do is put your bike in second gear and measure the resistance between that wire and earthed.

[Chris H]

Bmax is right just plug in the loom by the battry. the res on mine is 1.5?but yes if you check 2nd gear resistnce this is it, it changes from 4th upwards!ive got a feeling it goes to 1k from 4th onwards but its so long since i did my bike (8 years) i carnt remember.it was a well known fix back when grey 400s first came into the uk.

[Banditmax]

Shame i didnt know about the fix when i bought my m-max.

[Vidrazor]

Does the 1k resistor need to have a certain wattage? Most resistors are 1/4-watt, is that good 'nuff? Also, what kind of connector do you need and where can you get 'em? Thanks.

[Banditmax]

Im not sure on that but looking at the resistors in the senseor id say just a normal one will be fine.
 

[Chris H]

Ye Vid 1/4watt is fine with a 1% tolerance, you simply crimp the resistor into the connector that matches your loom then crimp the other end of the resistor to a peice of wire with a straight connector, then fasten the wire to the frame ,its that simple. I will check the resistance on my gear sensor thursday as i now ,finaly ,have the engine back in the frame,yeeehhaaa!!!