The Ford Barn - View Single Post - Brake lights swapping when signaling

dmsfrr · 12-07-2020, 02:05 PM

Check the electrical grounding of the tail-light housings to the body.
Lights switching from one side to the other is a very common symptom of a bad ground on one side.
It also happens with the front parking & turn signal lights and the high/low beam headlights. Easy to spot on cars with four headlamps, one will be normal brightness and the other three will be much dimmer.
Clean all the light fixture ground connections.

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12-07-2020, 02:05 PM	#2
dmsfrr Senior Member Join Date: Aug 2012 Location: Abq, NM Posts: 3,789	Re: Brake lights swapping when signaling - 61 Galaxie Check the electrical grounding of the tail-light housings to the body. Lights switching from one side to the other is a very common symptom of a bad ground on one side. It also happens with the front parking & turn signal lights and the high/low beam headlights. Easy to spot on cars with four headlamps, one will be normal brightness and the other three will be much dimmer. Clean all the light fixture ground connections. . Last edited by dmsfrr; 12-07-2020 at 03:13 PM.