 Headlight electrical question, bad ground |
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| vin man |
 Mar 29 2017, 10:37 AM
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#1
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Member  Group: Members Posts: 178 Joined: 19-February 10 From: Gilbert, Arizona USA Member No.: 11,380 Region Association: Southwest Region  |
On the driver side of my 71, the low beam comes on, but just barely. High beam works fine (Both beam are good on passenger side).
I have replaced the bulb, but still have the issue. While I suspect a bad ground, if that was the case, wouldn't the high beam not work properly has well? According to electrical diagram, there is only one ground wire coming out of the headlight. Anyone have advice on how to troubleshoot? I've checked the ground connection at the body and it is good. Thanks. |
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| vin man |
Mar 30 2017, 09:04 PM
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#2
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Member Group: Members Posts: 178 Joined: 19-February 10 From: Gilbert, Arizona USA Member No.: 11,380 Region Association: Southwest Region |
Test above completed.
With LOW beams on, I have about 12 Volts on each side of Fuse 3, but 0 volts across fuse 4. I will need to remove the fuse block and check the connection because there is supposed to be a jumper between the fuse 3 and 4 on the feed side (according to my diagram which I seem to understand more each time I look at it). My concern is that, according to the diagram, the feed should be on fuse 4, and the jumper goes to fuse 3. Will remove and inspect. Still looking for any other guidance. |
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Posts in this topic
vin man Headlight electrical question Mar 29 2017, 10:37 AM
Dave_Darling What kind of voltage are you seeing across each fi... Mar 29 2017, 12:50 PM
vin man
What kind of voltage are you seeing across each f... Mar 29 2017, 01:51 PM Dave_Darling That's how you'd do the measurement.
--DD Mar 29 2017, 11:42 PM jcd914 Compare the wires on each headlight bulb. The whit... Mar 30 2017, 12:02 AM vin man
That's how you'd do the measurement.
--D... Mar 30 2017, 09:12 AM Dave_Darling That's a major red flag, then!
--DD Mar 30 2017, 02:03 PM vin man Did some testing tonight. I removed the headlight... Mar 30 2017, 08:54 PM vin man Inspected and no breaks in the jumper. I cleaned ... Mar 30 2017, 09:36 PM |
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