Question about Oil Cooler Fittings KZ900/1000 Z1

Hello everyone,

Sorry, my first post is for a problem. I'm french so my english is not very good...
I have a z1000st from 1980.
I bought a Oil Cooler Fittings KZ900/1000 and other things some month ago at z1enterprise.
Now it is monted on my bike but I have a big problem :

This item is not conductive so the oil pressure indicator doesn't light anymore ! I can't roll with that problem...

Do somebody have a trick to allow the indicator to work properly ?
Morevover, I have a second oil sensor, is it possible to put it another place on the motor ?

I hope you would be abble to help me.

Best regards,
Purplehaze13.

The older Kz900/Kz1000's have a roller bearing crank shaft, with a oil pressure of between 2.0 to 2.8 PSI when the engine is up to operating temperature. The oil pressure light should come on as soon as the ignition switch is turned on, and go out when the engine has started.

I'd remove the engine sprocket cover(on the left side) and check the wiring going to the oil pressure sensor/switch for damage. Also see if the switch can be tested with a multimeter for electrical continuity with the engine off. Your switch may have failed internally.

Get a proper oil pressure gauge. Here is the one on my ride, works perfect.

About $55

MFolks wrote: The older Kz900/Kz1000's have a roller bearing crank shaft, with a oil pressure of between 2.0 to 2.8 PSI when the engine is up to operating temperature. The oil pressure light should come on as soon as the ignition switch is turned on, and go out when the engine has started.

I'd remove the engine sprocket cover(on the left side) and check the wiring going to the oil pressure sensor/switch for damage. Also see if the switch can be tested with a multimeter for electrical continuity with the engine off. Your switch may have failed internally.

In fact the wiring and the sensor are OK. When I take the sensor and I put it in contact with the frame ground, the lamp is lighting properly. The problem come from this item that is not conductive...

MFolks wrote: Get a proper oil pressure gauge. Here is the one on my ride, works perfect.

About $55

Maybe I must do the same thing. But I prefer to have a light on the handlebar that I can monitor while riding.

I dont see how the oil cooler fittings would make the light not light correctly? Arent the fittings aluminum like the rest of the engine. Only thing i could think of is the inner metal part of the sensor isnt making a contact.

I fixed it !

In fact it's very simple :

There is a ​​surface treatment on all the fitting so it can't work directly... I limed at a bracket screw head side. Must also lime in the fitting where the sensor make contact. I find it is a bit silly that the designers have not thought about it but the main thing is that now it works!

huh? i guess iam confused on what your saying?

Maybe I don't explain very well...

You 've got to scratch (or plane?) under the head of one screw so the ground pass from the engine to the fitting and scratch the surface where the sensor touch the fitting so the ground can go to the sensor.
Like this: