Rear running light only works when the low beam is on.

Discussion of the Genuine Buddy, Hooligan, Black Jack and other topics, both scooter related and not

Moderator: Modern Buddy Staff

Post Reply
scootERIK
Member
Posts: 714
Joined: Thu Jul 12, 2012 3:40 am
Location: Lake Geneva, WI

Rear running light only works when the low beam is on.

Post by scootERIK »

If I have the headlight on the low beam the rear running light works, but as soon as I flip the headlight switch to the high beam the rear running light goes out. Also, with the low beam on the light in the dash is on, but when I turn on the high beam the light in the dash goes out and the high beam indicator light comes on. The brake light works. The headlight works, both the high beam and low beam. Turn signals work, as do the hazards.

I run the high beam all the time, not sure if that matters. Also, there is a small chance that the problem started after a recent engine swap.

Does anyone have any ideas what is wrong or how to fix it? I will be doing some more testing tomorrow to see if I can figure what the problem is but would appreciate any suggestions on what to test or look at.

Thanks,
Erik
User avatar
JettaKnight
Member
Posts: 671
Joined: Thu Mar 29, 2007 2:19 am
Location: Fort Wayne

Post by JettaKnight »

I'm going to play Click 'n Clack here and say...

"Tell me that the high beam doesn't work, so my theory fits."

(cue Tommy's snorting guffaw)



Anyways, it sounds like a short circuit. The headlight, the gauge lamp and the taillight are all powered directly from the stator. I'd have to look at the wiring diagram, but that's my theory.

Is this a non-standard headlamp? I can't recall, but I believe the high and low wattage is about the same on a stock lamp, just where the filament is positioned is different.
scootERIK
Member
Posts: 714
Joined: Thu Jul 12, 2012 3:40 am
Location: Lake Geneva, WI

Post by scootERIK »

The headlight is a 35w/35w and yes I believe that the high/low is just positioning.
User avatar
Stanza
Member
Posts: 575
Joined: Mon Jan 29, 2018 8:34 pm
Location: Chicago

Post by Stanza »

Check the wiring diagram, and do some digging. Methinks you have a disconnected/crossed wire somewhere

http://www.modernbuddy.com/pdf/buddy125 ... manual.pdf
Post Reply