HIGH BEAM

[Toughspot]

Hey guys,

 

I lost my high beam function on the passenger side of my truck.  I know it's not the bulb because I already replaced it with a new one.

 

What color wires should I be tracing to repair this issue or what might the problem be?  The high beam function works perfectly on the driver's side. 

 

Thanks

[Mopar1973Man]

+12V -> Fuse -> Bulb <- Dimmer Switch <- Headlight Switch <- GND at driver side kick panel.

 

[Marcus2000monster]

Might be the multi function switch. 

[Toughspot]

4 hours ago, Marcus2000monster said:

Might be the multi function switch. 

The high beam on the driver's side works

[Mopar1973Man]

From the splice up to the socket would be my guess. Could very well be the headlight socket too. I've seen them melt over the years. 

Edited November 1, 2018 by Mopar1973Man

[Toughspot]

45 minutes ago, Mopar1973Man said:

From the splice up to the socket would be my guess. Could very well be the headlight socket too. I've seen them melt over the years. 

Can I splice from the driver's side high wire to the passenger side high beam wire and it works?  If so, what color is the wire?

[Mopar1973Man]

I would not suggest hacking wiring right away. First test if you got the ground signal there first. Double check the headlight socket for melting or bad contacts first. Really suck to hack up the wiring and that wasn't the problem. 

[Toughspot]

1 minute ago, Mopar1973Man said:

I would not suggest hacking wiring right away. First test if you got the ground signal there first. Double check the headlight socket for melting or bad contacts first. Really suck to hack up the wiring and that wasn't the problem. 

Would having "low beam" be an indication that ground is in tact?

Edited November 1, 2018 by Toughspot

[Mopar1973Man]

1 minute ago, Toughspot said:

Would having "low beam" be an indication that ground is in tact?

 

No. 

 

There is two different grounds the hi beam leg and the lo beam leg from the dimmer switch. The ground leaves there heads to the headlight switch and ties in at the drive side kick panel inside the cab. The fact that the headlights come on just proves there is ground. But the ground for the hi beam leg might be damaged from the splice forward or the actual headlight socket. 

 

[Toughspot]

1 minute ago, Mopar1973Man said:

 

No. 

 

There is two different grounds the hi beam leg and the lo beam leg from the dimmer switch. The ground leaves there heads to the headlight switch and ties in at the drive side kick panel inside the cab. The fact that the headlights come on just proves there is ground. But the ground for the hi beam leg might be damaged from the splice forward or the actual headlight socket. 

 

 

 

High beam works on the driver's side.  Does each headlight have its own high beam ground?

 

By the way I checked the socket out yesterday when I changes the bulb and it was good.

Edited November 1, 2018 by Toughspot

[Mopar1973Man]

1 minute ago, Toughspot said:

 

High beam works on the driver's side.  Does each headlight have its own high beam ground?

 

Yes, until it reaches the S105 splice.

The wiring is backwards on our trucks the common on the bulb is +12V the hi beam and low beam leg are controlled by grounds. 

[Toughspot]

Just now, Mopar1973Man said:

 

Yes, until it reaches the S105 splice.

Okay... I saw a ground that's not connected and I left it off.  Wasn't sure what it was for, but it looked like it went to a component like box and all the other wires from the lights also join.  I'll connect it this evening when I get home.

[Mopar1973Man]

Headlight ground is in the driver side kick panel inside the cab. 

[Toughspot]

Just now, Mopar1973Man said:

Headlight ground is in the driver side kick panel inside the cab. 

Okay

[Toughspot]

Hey guys,

I found what what the problem is.  

 

Back in the day I installed a britebox that would allow my fogs to stay on with high beam.  There are some loose wires.  I need the installation manual to sort this out because there are some splices in this circuit.

 

Any assistance would be greatly appreciated 

[dripley]

You might be able to get the install manual offmtheir website. I know can get install manuals from most products without buying the product. But if yours is old things might have changed.

[Toughspot]

10 hours ago, dripley said:

You might be able to get the install manual offmtheir website. I know can get install manuals from most products without buying the product. But if yours is old things might have changed.

I found the install manual. 

 

Thanks bud

thebritebox.pdf

[dripley]

[Toughspot]

UPDATE:

 

Hey guys I found the problem.  Apparently my high beam wire (red wire) was cut.  Once I connected it along with my thebritebox everything worked fine.

 

Thanks for all your help

[dripley]

Good to hear you resolved the issue.