1973 300 tail light issue

[mikes47jeep]

I'm having an issue with the tail light on my 300

With the headlight switch off I have brake light

Then when I turn on the headlight switch, the headlight comes on, but I have no tail light, or brake light

I looked under the dash and the harness doesn’t look butchered up (no electrical tape or splices)

Dose anyone have any hints, or a wiring diagram for a pull start 300??

[Matt]

Got the wiring diagram on the site, and you can also find the service manual on webman's site: http://www.jdsleds.com/tech/wiring/73wiring.jpg or http://www.vintagesnow.com/John_Deere.html

If the wiring looks intact, maybe a switch has been wired incorrectly? Check the wiring diagram against what you have hooked up to the light switch, brake switch, and tail light.

[JDT]

I am going to take a stab at this and say that you have lost the ground connection on the taillight housing. Black wire that goes the the tunnel from the rear light.

[Invader440]

I am going to take a stab at this and say that you have lost the ground connection on the taillight housing. Black wire that goes the the tunnel from the rear light.

I have to agree with this from experience. Start with the ground connection and go from there.