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Old 04-30-2020, 08:34 AM   #1
hessam69
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Default Smoke emitting when high beam pulled

Hi,

I have a 740 and when I turn on the high beam smoke comes from the switch. I can replace the indicator switch assembly but how do I know the problem isn't somewhere in the wiring to it?
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Old 04-30-2020, 10:21 AM   #2
daniels740
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If you pull it out, it may be worthwhile to give it a good clean using electric parts cleaner; you'd be surprised how often that works to fix bad electrical contact as well as other electrical issues.
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Old 04-30-2020, 01:07 PM   #3
apachechef
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just get this if you run out of smoke:
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Old 04-30-2020, 01:35 PM   #4
Dirty Rick
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Another thing that could be a problem is if you have installed high output bulbs.

There is a guy that sells a kit to take the headlight load off the dash wiring.

https://www.wagonmeister.com/highvol...lightharnesses
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Old 04-30-2020, 01:38 PM   #5
Dan
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Quote:
Originally Posted by apachechef View Post
just get this if you run out of smoke:
700's are negative earth you ninny......
also, check ends of connectors in plug, probably corroded where wires are to connector...
Best bet is to install a relay kit like mentioned above.
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Old 04-30-2020, 02:16 PM   #6
apachechef
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Originally Posted by Dan View Post
700's are negative earth you ninny......
also, check ends of connectors in plug, probably corroded where wires are to connector...
Best bet is to install a relay kit like mentioned above.
Just hold bottle upside down you goofball
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Old 05-03-2020, 10:27 AM   #7
Lazarus
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Quote:
Originally Posted by hessam69 View Post
Hi,

I have a 740 and when I turn on the high beam smoke comes from the switch. I can replace the indicator switch assembly but how do I know the problem isn't somewhere in the wiring to it?
Smoke coming from the steering column? I suppose the high/low beam switch in the column could smoke, but I think that switch controls the headlight relay in the fuse panel. A lot more current is flowing in the headlight relay. Mine slowly melted the slot in the fuse panel and would have caught fire if I hadn't found it accidentally. Check your headlight relay as part of the job.

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Old 05-04-2020, 02:30 AM   #8
gottarollwithit
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Clean the switch, check the relay....

Then buy a relay harness kit, or make one. Not sure how good those are in that link above, but a good relay harness will make your car a lot nicer to drive at night. Remember, full juice passes through your switch to get to the headlights. Quite a path it takes to get there. Juice directly from the battery and only using the juice from the headlight switch to kick the relay on, makes your lights brighter.
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