05-30-2020, 10:10 AM
Hi all,
Getting ready to take the bus out of the storage place, got H4 LED bulbs and thought it is time to do an upgrade.
As I change bulbs, before I put everything together, I have to test them.....no low beams...both sides, no power to the bulbs sockets.
I have the quad headlight setup with Ford Bronco elements, each headlight has a H4 dual filament bulb. I can get the inside pair (high beam) to light up if I pull on the turn signal stalk...but no low beams. Parking lights OK, turn signals ok, marker lights ok...no low beams. Puzzler...
Checked the fuses, the high and low beam circuits both go through a self resetting 25 amp fuse each, separate for high and low beams. Both Breakers are good. I have 12v power leaving the breaker but not getting to the bulbs. If there was one only I would think I have to look for a broken wire or no contact...but both ? I can not find in the diagram a headlight power relay...is there one somewhere ?
So...what am I missing ? Is there a release relay somewhere that allows lights to come on when the bus is in Drive only, or Parking brake disengaged and I don't know about it somewhere ?
Anybody had this happen ?
Another thing I just noticed is that the high beam blue light indicator on the dash does not come on when the high beams are on....it should...I will pull that bulb out after I take the dash cap off and check it out...
Any suggestions ?
Getting ready to take the bus out of the storage place, got H4 LED bulbs and thought it is time to do an upgrade.
As I change bulbs, before I put everything together, I have to test them.....no low beams...both sides, no power to the bulbs sockets.
I have the quad headlight setup with Ford Bronco elements, each headlight has a H4 dual filament bulb. I can get the inside pair (high beam) to light up if I pull on the turn signal stalk...but no low beams. Parking lights OK, turn signals ok, marker lights ok...no low beams. Puzzler...
Checked the fuses, the high and low beam circuits both go through a self resetting 25 amp fuse each, separate for high and low beams. Both Breakers are good. I have 12v power leaving the breaker but not getting to the bulbs. If there was one only I would think I have to look for a broken wire or no contact...but both ? I can not find in the diagram a headlight power relay...is there one somewhere ?
So...what am I missing ? Is there a release relay somewhere that allows lights to come on when the bus is in Drive only, or Parking brake disengaged and I don't know about it somewhere ?
Anybody had this happen ?
Another thing I just noticed is that the high beam blue light indicator on the dash does not come on when the high beams are on....it should...I will pull that bulb out after I take the dash cap off and check it out...
Any suggestions ?
MG