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flyin2
04-21-2018, 05:03 PM
Hi my high beams used to work and now neither do when i go to turn them on. Any idea what to check?


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DMC5180
04-21-2018, 05:10 PM
Hi my high beams used to work and now neither do when i go to turn them on. Any idea what to check?


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Please explain used to work. What do you mean by Neither Do? Do you mean one light quit then then the other quit or they both just stopped lighting up.?

For the latter, check fuse 15.

If you pull the stalk switch back (flash to pass) do you have all 4 lights or not?



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DMC-Ron
04-21-2018, 05:15 PM
Dennis,
Start with the high beam fuse 15. It's a 20 amp. If it is blown then it's likely a symptom of another issue.

Next check the high beam relay.

56007
Note that the link above has the correct fuse numbers. The attached file below has the fuse numbers reversed, but I couldn't find a way in edit mode to delete the attachment.
Ron
WHO1DMC
04-21-2018, 06:39 PM
Fuse #15 can have heat issues in the fuse box so check for that.
I found that mine had this issue last fall. I think was do to corrosion of the fuses. So yup a fuse box replacement is in my future.

Dave B.
DMC5180
04-21-2018, 10:47 PM
Dennis,
Start with the high beam fuse 15. It's a 20 amp. If it is blown then it's likely a symptom of another issue.

Next check the high beam relay.

56007
Note that the link above has the correct fuse numbers. The attached file below has the fuse numbers reversed, but I couldn't find a way in edit mode to delete the attachment.
Ron

Ron,

Perhaps you meant to direct your response too the OP.

I mentioned Fuse 15 in my first post,but wanted clarification to a couple things from the OP before adding additional diagnostic info.


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DMC-Ron
04-22-2018, 03:00 AM
Dennis,
Yes, my response was for the OP. One of those things where we both responded almost simultaneously. I thought I was the first response. But you were just a little faster. I scrolled up and mistook your signature for the originating post. At least great minds plow the same row :)

Ron
David T
04-22-2018, 08:41 PM
Do you hear the relays clicking? Also check that the high beam filament in BOTH headlights are not burned out. The bulbs with 3 brass terminals have a low beam and a high beam filament and one or the other (and sometimes both) can be burned out. One terminals is the common and each of the other terminals is the other end of each filament.
flyin2
04-22-2018, 11:15 PM
Do you hear the relays clicking? Also check that the high beam filament in BOTH headlights are not burned out. The bulbs with 3 brass terminals have a low beam and a high beam filament and one or the other (and sometimes both) can be burned out. One terminals is the common and each of the other terminals is the other end of each filament.

Thank you all! I will check these things tomorrow.



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OverlandMan
04-23-2018, 11:40 AM
When I bought my car several years ago, the high beams didn't work. I could hear the relay clicking when I turned them on but no lamps. I ended up replacing the headlight switch with the DMCH repro modified system and this resolved my issue. As a result, I deduced my original headlight switch was bad.
flyin2
04-23-2018, 09:23 PM
It is now fixed. I re seated the fuses and it started working.


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DMC5180
04-23-2018, 09:35 PM
It is now fixed. I re seated the fuses and it started working.


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This is a classic symptom of heat resistance corrosion in the fuse box terminals. Did the fuse box show any signs of distortion or melting at that location? At the very least you should pull all your fuses and abrade them with fine sandpaper. This holds true for the fusebox terminals too. Its a little tougher to find something to stick in them though. Nowadays it is highly recommended that the fuse box be replaced. The the new terminal are much better than the originals.


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flyin2
04-24-2018, 08:33 AM
Now that you mention it yes there was signs of heat issues on some of the fuses. Where is the recommended place to get the new fuse box? https://uploads.tapatalk-cdn.com/20180424/abcf83d3a03e9bc28d3995c0a19ce9c1.jpg


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DMC5180
04-24-2018, 10:06 AM
Now that you mention it yes there was signs of heat issues on some of the fuses. Where is the recommended place to get the new fuse box? https://uploads.tapatalk-cdn.com/20180424/abcf83d3a03e9bc28d3995c0a19ce9c1.jpg


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Most Vendors have the kit supplied by DMCH.

http://store.delorean.com/p-7190-fuse-box-assembly.aspx



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