GPZ500 side stand switch

wilbur · Traffic Copper Joined: 20 Sep 2006 Karma :

Right I HAVE searched for this as I am sure its been discussed before but I cant see the answer.

GPZ500 - Famous for a dodgy cut out switch (the one that stops you riding off with the side stand down). Its started cutting the engine even when the bikes in Neutral. Also stops the starter motor working properly with the side stand down it sort of trys and does not turn over. Battery fully charged. Everything else working fine.

I've liberally WD40'd it and now the side stands a lot easier to use Smile

But thats a bit of an aside Very Happy

.

I jave a feeling that a lot of people just disconnect it. I know we have a lot of GPZ500 riders here anybody able to tell me how to do this ? Or any other suggestions welcome. Thanks.

Wilbur

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Aye, the idiot switches are a nightmare of wiring too, feindishly complex.

What model GPZ? You can bypass the whole lot at the level of the CDI by bridging two wires but I need to know if it is an A,B,C or a D and later model.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

wilbur · Traffic Copper Joined: 20 Sep 2006 Karma :

He he I thought you might be the one to ask. Its the D model 1997.

Ta.

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Black on green wire from the IC ignighter connected to to earth (earth= Any yellow on black wire or the frame) either at the IC ignighter box or at the fuse box. This bypasses the whole ignition cutout system.

This leaves the clutch switch/neutral starter interlock in place. To bypass this (so you can operate the starter in gear if you want to and so a switch failure doesn't lock out the starter motor), either connect the yellow on green at the fuse box to earth or connect the yellow on green at the clutch switch connector block to the yellow on black in the same connector block (the light green is now surplus to requirements, just leave it where it is).

Please test this using a temporary 'jumper' wire before you go cutting any wires (basically bridge both the black on green and the yellow on green to earth at the junction box and check it all works, especially the neutral light).

It's been a while since I did it to mine and I just worked that lot out from scratch on a wiring diagram. I don't recall having any difficulties but it's always best to check.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

wilbur · Traffic Copper Joined: 20 Sep 2006 Karma :

Mucho thanks I will see how the WD40 works and if not give it a go.

nigel_robbins · Two Stroke Sniffer Joined: 27 Jan 2011 Karma :

I had the same problem.

WD40 didn't work for me.

But...

I removed the switch and wired the white/green cable to the frame.

My GPZ 500 is a 1995 N reg (D2).

Many thanks stinkwheel.