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post #1 of 9 (permalink) Old 08-22-2013, 12:25 PM Thread Starter
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Something on the fritz, ideas?

Alright, this is strange and I will do my best to explain this problem I am having.
About a month ago I noticed that sometimes when I would turn my high beams on, there was a short, and quiet beep of the horn. A few nights after this, I noticed that sometimes my high beams would shut down or dim, when I was not on the throttle (low rpm). This made me question my battery and alternator. Needless to say, I charged the battery and the problem still existed, yet to get the alternator checked.

Now fast forward to last night.....
Was out for a ride, and went to turn on my high beams, nothing. Dash indicator was on, but no change with my lights. Decided I should go home and try to figure x, y, z out. I come to a stop at a stop light, high beams off, and my horn goes off, short beep. Strange...Next stop light, nothing, next stop sign, another horn beep. Try the high beams, works fine, no beep and they light up.

Does anyone have any idea? Fuse? Circuit? PCM?
Ultimately I think Bruce is on his way to the dealer for diagnosis, but what can I check in the mean time?

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post #2 of 9 (permalink) Old 08-22-2013, 04:59 PM
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Sounds like you need a priest!
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post #3 of 9 (permalink) Old 08-22-2013, 05:08 PM
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Sounds like you need a priest!
I could ask him for donations and 10% of his salary too..... lol.

Sounds like a PCM or BCM issue. Good luck anything wiring related is going to be rough I bet.

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post #4 of 9 (permalink) Old 08-22-2013, 05:43 PM
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u got a gremlin

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post #5 of 9 (permalink) Old 08-22-2013, 06:03 PM
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u got a gremlin

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post #6 of 9 (permalink) Old 08-22-2013, 08:21 PM
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There may be a short between the wires in your steering column. When you say they dim, it suggests that another wire is drawing power away from your lights. It may very well be located in the turn signal lever (turn signal combination switch).

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post #7 of 9 (permalink) Old 08-23-2013, 01:05 PM
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http://youtu.be/s8imklDkUds

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post #8 of 9 (permalink) Old 09-04-2013, 11:37 AM Thread Starter
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Well kids, I hope you all learn from this. 30 minutes into diagnosis, the left headlight ground wire had about 1/2 inch of play. The screw was very loose. Needless to say, the little electric gremlins have all let the building.

2009 PBM G8 GT (1 of the 3681)
SLP Blackwing CAI
SLP Long Tube Headers
MagnaFlow Cat Back Exhaust
Livernois Tune
30% tint, VG Sharkfin, Interior LED swap out
55W 6000K HID Fog Light Conversion
6000K Switchback Turn Signals
Plastidip'd all chrome
VMR v710 Matte Black 19" (F8.5"/B9.5")
376 RHP and 352 Rftlb on Mustang Dyno
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post #9 of 9 (permalink) Old 10-01-2013, 10:55 AM
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Nice find!

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