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2 STROKE WORLD .net

The 2-Stroke Garage => General Chatter => Topic started by: Milan on June 08, 2022, 10:21:04 AM

Title: RD350 B Lights
Post by: Milan on June 08, 2022, 10:21:04 AM
I have a 1975 RD350 B.

Are the headlite, & clock lights supposed to come on with the key On, & light switch On?

Or does the bike have to be running for those to work?

My 75 RD250B = headlight & lights come on with key
79 USA Daytona = headlight comes on with engine running only.

M
Title: Re: RD350 B Lights
Post by: m in sc on June 08, 2022, 11:35:06 AM
its the same as your 250. yes. its the same exact wiring harness and switchgear actually.  :twocents:
Title: Re: RD350 B Lights
Post by: Striker1423 on June 08, 2022, 11:36:59 AM
On the RD400 that's on purpose to save the battery.
Title: Re: RD350 B Lights
Post by: Milan on June 08, 2022, 11:41:39 AM
Thanks,

I downloaded & printed out the wiring diagram.
So I will now set off to troubleshoot.

Thanks all

Note:
My Canadian Daytona = Headlite comes on with switch


M
Title: Re: RD350 B Lights
Post by: SoCal250 on June 08, 2022, 12:02:57 PM
The RD400E & F (US) have a lighting relay that is off until the engine is turned over, energizing the circuit.
The RD250, RD350, RD400C & D (and others) do not have this relay so the lights turn on with the main switch (key). Attached is an image for reference that I provided here a while back.

The RD400F & G (CAN) do not have the lighting relay because they have a completely different electrical system and CDI.
Title: Re: RD350 B Lights
Post by: Milan on June 09, 2022, 09:11:17 AM
Got this sorted out.

Dark brown & light brown wires swapped.
And burned out bulbs.

Headlight voltage low.
took apart Hi / Low switch, cleaned contacts
Proper voltage now seen.
All working

M
Title: Re: RD350 B Lights
Post by: m in sc on June 09, 2022, 10:14:15 AM
common error. glad you got it sorted
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