1978 Z1R Wiring Diagram

[cagimaha]

Hi all, after much frustration I've decided that the wiring loom on my bike is useless so I'm going to have a go at making one up myself. Is there any chance one of you knows where I can find a wiring diagram online (preferably free) or possibly scan one out of a manual? Cheers, Ben.

[compo z1r]

theres one in the owners manual under ya' seat if not theres one in the clymer book. if not i can scan one for you and post.

[compo z1r]

ben this might not be too far away

http://cgi.ebay.com/ebaymotors/1978-kaw ... _796wt_939

[cagimaha]

I'm planning on slimming the harness down quite a bit so I think I'm gonna have a go at making my own first before buying a replacement. I've done it before on other bikes so (fingers crossed) I should be ok. If you could post a scan of the diagram that would be much appreciated. Cheers, Ben.

[chrisu]

this help ?

http://s101.photobucket.com/albums/m45/chrisu_2006/Z1R%20wiring%20diagram/

[cagimaha]

Spot on thanks! Much appreciated, Ben.

[cagimaha]

The saga continues... I've traced the reason the bike had no spark back to a faulty ignition relay. It's got a permanant live feed, earth, switch and live output to the coils. Only the output to the coils is dead as a dodo. Only thing is I can't seem to find any sign of an ignition relay anywhere on the wiring diagram. Did any of the Z series have an ignition relay and is there any need for one? Can I not just wire it all up to the key switch so that when the key is turned power is supplied to the coils? Cheers, Ben.

[Pigford]

I think some one has done the "Wired by George" mod, which uses a relay to supply power directly to the coils when ign is on! This is NOT std Kawasaki stuff, but when done properly, can be a good mod

If the relay has stuck on (or wired wrong) constant power to the coils will usually burn them out

[cagimaha]

Is this due to the ignition key switch not being quite up to handling the amperage for the supply to the coils? If so then I'll invest in another relay and get it sorted. It's definitely not been done properly though, the relay has been split open at some point and glued back together with what looks like a hot glue gun. Luckily it had decided not to output anything to the coils at all so fingers crossed it hasn't fried them. I'll post some pictures of the wiring up in a bit, makes quite entertaining viewing (for you guys anyway). Thanks for the help, Ben.

[cagimaha]

Here's what I'm up against!

[Pigford]

The idea is to ensure the coils get the full +12v supply.

Older wiring gets tired and voltage drop can cause a good few volts lost by the time it travels up and down the loom a few times typical of older Jap wiring ethos

You're best off checking the voltage at the coils with/without the relay - but if the relay is done right, its a positive improvement (pun intended )

[compo z1r]

[quote="cagimaha"]Here's what I'm up against

bloody' hell there'll be a three pin 13amp plug some where in there

new loom

[chrisu]

or at least a job lot of proper japanese bullet connectors..........

[cagimaha]

Thanks for that Pigford. As long as the switch can take the amperage I'll try it without a relay and see what sort of voltage I'm getting at the coils. If it's no good then I'll put a relay in. Hopefully some new wire and a much simpler loom will mean the drop is pretty low.

As for the state of the wiring, I haven't found any plugs yet but the ignition pickups appear to have been wired in with some form of co-axial cable? I'm assuming it's not meant to be like this. Unless it needs to be shielded for any reason? The help's much appreciated, sorry for all the daft questions. Cheers, Ben.

[Rich]

You have mk2 ignitor box, what look to be 2.2 ohm coils and the pickups should be wired direct to the ignitor box. For that ignition it should also run through a 1.5 ohm ballast resistor to 1.5 ohm coils. It will work fine if you put some 3 Ohm dynas on it, when/if you get it running check the ignitor box isn't getting hot if it is put a ballast resistor in the feed to the coils. Reg/rect looks to be swapped too - SH232 is a H**** number.