![]() |
|
|
|
Registered
|
H4 low beam issue
Been a while……..
I did the full Bosch Euro H4 upgrade years ago. Did the proper upgraded install with new wires, with in line fuses, 4 relays, etc… Having an issue with my low beam driver side H4. It stopped working a month ago, so I bought replacement 55w\100w bulbs, thinking since it’s been over 10 years of me doing the H4 upgrade on my 76 911S, low beam part burnt out, since my high beams still work. Replaced the bulbs today, but still have the same issue. I checked the fuse panel, the inline fuse on the upgraded wire, checked the connection to the fuse panel, and the headlight. All looks good. As does the area I have them grounded to. Could the relay have crapped out ? I’m not sure where else to look for the issue. Thanks Bill
__________________
Bill MID9 #4 if i cant play with it ,,i dont want to own it |
||
![]() |
|
ROW '78 911 Targa
|
Yes, check the relay coils haven’t burnt up, or the contacts have failed.
__________________
Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
||
![]() |
|
Registered
|
Not being an expert on that, how would I go on checking that ?
__________________
Bill MID9 #4 if i cant play with it ,,i dont want to own it |
||
![]() |
|
Registered
|
See if you have power and ground on the control side of the relay with headlight switch on.
Then check for power on the load side.
__________________
Pete 79 911SC RoW "Tornadoes come out of frikkin nowhere. One minute everything is all sunshine and puppies the next thing you know you've got flying cows".- Stomachmonkey |
||
![]() |
|
Registered
|
Test light is the easiest way to check for power, meters measure voltage and continuity.
|
||
![]() |
|
Registered
|
Thank you for the info.
__________________
Bill MID9 #4 if i cant play with it ,,i dont want to own it |
||
![]() |
|
![]() |