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2007 trx90. The green neutral indicator light recently stopped coming on even when in the neutral position... After clicking the shifter up and down a few dozen times I can get it to come on and only then will the quad start. Is this a neutral safety switch issue or could it be something else
 

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First guess is a bad neutral switch switch or a bad wire connection, but it could be a bad key switch also.

The neutral light is the only thing that lets you know the power from the battery has mad it to the black wire when the switch is turned on.

Check the battery terminals first (clean & tight) - then take the light green wire with the red stripe off the neutral switch and connect to ground (this should turn on the light) or jumper from the switch to ground (same thing - it turns the light on) if the light turns on every time you touch the lg/r wire to ground, replace the switch. If you leave the wire grounded, the light will stay on all the time and it will start in gear.

If the light is intermittent when grounding the lg/r wire, you might have a bad wiring harness connection, bad engine ground, bad neutral light bulb or socket or something off the wall that I haven't covered in this brief troubleshooting guide.

Good luck
 

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I had a similar issue last summer with our 2006 TRX90. After some troubleshooting, I found the issue was with the neutral safety switch. If I remember right, I was able to bypass it to confirm that was the problem.
 

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By the way, let me know if you need a wiring diagram....I have the factory manual and could scan it an email it to you.
 

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I would check the wire connection at the shifter. I looked at a 400ex once where the light wouldn't come on, turns out the connector to the shift lever was loose and it would pop off. Someone cab correct me if I'm wrong but the 90 should be somewhat similar despite being an automatic.

Sent from my SM-G900V using Tapatalk
 

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So, WHERE is the neutral safety switch? I have an 01-02 Rancher 350 with this problem. I purchased the part (because that usually helps you locate it) and I don't see it anywhere.
 

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What part number did you get? I took a wild ass'ed guess and looked at a TRX350FE (Honda had FE, FM TE,and TM models in 2002) and there is no neutral switch on any of them - there is a "gear change switch" which sends signals to the display to indicate neural and each gear.

If you are not sure of the year and model, please provide VIN and I will tell you exactly what you have.
 

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Thanks for the reply Here 2.

I got part number 35600-HA0-003 (Honda OEM).

The catch is that the VIN is buried under a winch. There is no "display" on my 350 (see pic below) just 3 lights (N/R/O) and the ignition. If that's not enough to go on I can start unbolting...

Thanks!

Biff
 

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The part you got is located on the LH side of the rear engine cover kind of to the RH side and slightly lower than the gear change switch. Should be a single light green wire with a red stripe running to it. If you take the wire off and touch it to ground with the main switch on, the neutral light should turn on.
 

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OK - I moved the winch and verified the model. It is a 2001 TRX350TM. For the life of me I can't find this part on this model so I'm assuming the neutral safety switch on an 01 is located somewhere else, perhaps even internal?? Again - thanks for the help!

Biff
 

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Here 2,
So that just isn't there (no idea why). However, up on the left hand side of the rear cover I found a pair of wires. I traced them back to a junction on the right side of the frame and disconnected them. If I short out the green one - N indicates on the dash. If I short out the gray one - R indicates on the dash. So those two wires must be attached to the switch (or whatever) inside the rear case?? Do I just simply have the wrong part or do I need to remove the rear cover to get to it?

Thanks again for all your help!!

Biff
 

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I think you have a year model other than 2001 - any way you can get the VIN?

At the very least, can you post a pic of the rear cover and where the green and grey wires go?
 

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The vin is on a flat plate between the two frame rails on the front of the machine - at any rate - it is definitely an 01 350TM (two wheel drive manual shift)
 
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