Ideas about wierd electrical issue? foglight,taillight, radio?

Liquid_G · 10-05-2009, 01:57 PM

Hey everyone.. Noticed something pretty bizarre while driving yesterday.

Not sure if this belongs in audio section or this lighting one.. mods please move as needed..

So last weekend installed my DNX6140.. everything works.. no issues..

that same weekend I installed my rear fog light.. I put a 7443 brake/tail light plug in it, so it is dim with lights on and gets bright with the brakes applied..
Everything there is fine..

So yesterday I'm driving.. come up to a corner, brake, put on right turn signal.. all of a sudden I see my radio dims/brightens/dims/brightens with the pulse of the turn signal.. wtf?

Only happens with the right turn signal, and ONLY when I apply the brakes first. If I put right turn signal on first and then brake its fine.
This doesn't happen with the left turn signal.. which i'm pretty sure is the side that I tapped for the fog light. (used red,green,black from the main harness back there)

I have the DNX6140 set to SYNC so it dims with the headlights turning on.

I believe this is with the headlight stalk switch in AUTO also.. (need to verify but thats usually where I leave it) It was daytime so the headlights were not on at the time.

Anyone seen this before? I haven't ripped anything apart yet to try and diagnose.. just wondering if anyone has seen this before.

kenchan · 10-05-2009, 02:10 PM

unplug the foglamp and see if that takes care of the problem.

10-05-2009, 01:57 PM	#1 (permalink)
Liquid_G A True Z Fanatic Join Date: Aug 2009 Location: Chicago Burbs Posts: 1,439 Drives: 09 370z Supercharged Rep Power: 43	Ideas about wierd electrical issue? foglight,taillight, radio? Hey everyone.. Noticed something pretty bizarre while driving yesterday. Not sure if this belongs in audio section or this lighting one.. mods please move as needed.. So last weekend installed my DNX6140.. everything works.. no issues.. that same weekend I installed my rear fog light.. I put a 7443 brake/tail light plug in it, so it is dim with lights on and gets bright with the brakes applied.. Everything there is fine.. So yesterday I'm driving.. come up to a corner, brake, put on right turn signal.. all of a sudden I see my radio dims/brightens/dims/brightens with the pulse of the turn signal.. wtf? Only happens with the right turn signal, and ONLY when I apply the brakes first. If I put right turn signal on first and then brake its fine. This doesn't happen with the left turn signal.. which i'm pretty sure is the side that I tapped for the fog light. (used red,green,black from the main harness back there) I have the DNX6140 set to SYNC so it dims with the headlights turning on. I believe this is with the headlight stalk switch in AUTO also.. (need to verify but thats usually where I leave it) It was daytime so the headlights were not on at the time. Anyone seen this before? I haven't ripped anything apart yet to try and diagnose.. just wondering if anyone has seen this before.

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10-05-2009, 02:10 PM	#2 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141520	unplug the foglamp and see if that takes care of the problem.