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have a c5 z06, replaced headlights with led bulbs, lights work but headlamps wont go back down. have checked #6 fuse, still good, no codes popping up.help!
have a c5 z06, replaced headlights with led bulbs, lights work but headlamps wont go back down. have checked #6 fuse, still good, no codes popping up.help!
Lets start with the easiest first.... Turn on the brights, then turn the lights off. The LED's don't pull enough current to let the switch know whats happening.
From my experience with the headlight control module, one of the connections has to be grounded in order for the HCM to signal close. When studying the wiring diagrams, that wire is actually grounded through the headlights. Replacing it with LEDs or HIDs screw up this system. Switching to high beam mode (assuming your high beams are still halogen) changes the ground path from through the low beams to through the high beams, which makes it work.
On a semi-related note and some advice, get those LEDs out of the headlights. No one makes a good LED replacement for our Corvettes, no matter what forum vendors and other members may claim. Use 9011 and 9012 HIR bulbs instead.
From my experience with the headlight control module, one of the connections has to be grounded in order for the HCM to signal close...
I think I remember a previous post from you, where you provided ground to the Headlamp ON Input on DACM, when turning OFF the headlights, by tapping into CKT 103 with a relay and eliminated this problem when using HIDs or LEDs.
Originally Posted by Tsumi
...When studying the wiring diagrams, that wire is actually grounded through the headlights. Replacing it with LEDs or HIDs screw up this system. Switching to high beam mode (assuming your high beams are still halogen) changes the ground pathfrom through the low beams to through the high beams, which makes it work...
That is what I can't see in this schematic. I don't see how the Headlamp ON Input on DACM is groundedthrough the lowbeam headlamp filaments when the Headlamp OFF command is given. Do you have another schematic where this could be seen?
Aside from that, those filaments are ON and therefore the "hot" wire connected to the filaments is not grounded through a cold filament. Full battery voltage is present at that point when low beams are ON. Could you please elaborate?
As you can see, the white wire that signals the on for the headlight control module is connected to the low beams through the MFS. Pushing the MFS to high beam connects that white wire to the high beams and allows it to close in the case that halogen high beams are being used.
