Aftermarket Alarm, Running lights stay on? - Ford Powerstroke Diesel Forum
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Old 11-22-2011, 08:21 PM
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Aftermarket Alarm, Running lights stay on?

Lets see if I can explain this one:

When I arrived home this evening the running lights on my 1989 F350 were on. I assumed someone was in it, but no. When I opened the door assuming I left the lights on, I found the light switch to be off. I moved the switch to running lights, head lights on, then back to off but the running lights still stayed on. When I go from the running light being on to off they simply get a tad dimmer. I also then noticed the Gauge cluster and A/C lights are lit as well.

The truck has an aftermarket alarm that someone before me installed. While working with the lights it started going off/on etc... I could get it off but it wil start back up over and over. I ended up finding the wires going to the noise maker and cut them. Maybe its hooked into lights?

After fooling with it I could work the knob some and maybe get the running lights off for a short time, but they would cut back "on" within a couple of seconds. After fooling some more, the running light (while the switch was off) started flashing quickly and I could hear a relay under the hood clicking as well. I found the relay, and removed it to find the lights still stayed on and the still were blinking- i simply removed one of I assume many relays. While the remaining clicking was under the dash, sounding as if it was behind the foot plate near the parking break release, when/if I turned the lights all the way on - the clicking would stop.

At this point, I am suspect the switch has gone bad. Or could it be a relay? Maybe this aftermarket alarm is triggering the lights?

Any direction would be helpful. Unplugging the batteries for now

Thanks ahead of time....
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Old 11-27-2011, 11:27 AM
Can you hear the derail??

 

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Sounds like the alarm is giving current to the park lights still, may need to replace the alarm its self, atleast unplug that unit see if the lights go off for ya.
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