1990 998 Headlight Issues

[darylwiz]

1990 Humvee

Here is all my issues

3 Switch Turned all the way to the right-
No Headlights
Turn blinker to the right side (passenger) , turns both front blinkers on, Turns rear right blinker on Running Lights work
Turn blinker to the left side (Driver) nothing up front flashes. Nothing in Rear Flashes. Running Lights work

One Right Click over
Turn Blinker to the right (Passenger) front left signal flashes right rear flashes
Turn blinker to the left Right Front flashes, both rear flash. Running lights

High Beam Indicator on Dash lights up and turns off when pressed off and on

Problem is I can’t get the headlights to work….At all…..


Any help would greatly be appreciated or any electrical geniuses in California, Los Angels or Orange County.

 

[INFChief]

1990 Humvee

Here is all my issues

3 Switch Turned all the way to the right-
No Headlights
Turn blinker to the right side (passenger) , turns both front blinkers on, Turns rear right blinker on Running Lights work
Turn blinker to the left side (Driver) nothing up front flashes. Nothing in Rear Flashes. Running Lights work

One Right Click over
Turn Blinker to the right (Passenger) front left signal flashes right rear flashes
Turn blinker to the left Right Front flashes, both rear flash. Running lights

High Beam Indicator on Dash lights up and turns off when pressed off and on

Problem is I can’t get the headlights to work….At all…..


Any help would greatly be appreciated or any electrical geniuses in California, Los Angels or Orange County.

I don’t have a TM or a schematic - but I vaguely remember that the turn signal switch has something to do with headlights. I’m either thinking of a much older vehicle or I’m hallucinating….

 

[NDT]

Are your bulbs burned out? Very common issue.

 

[INFChief]

It also just dawned on me - check your grounds. I’ve seen military vehicle lights do some ‘wild & crazy’ things because of poor grounding.

 

[mgFray]

My limited trouble shooting on my 1988. Work in this order:

Bulbs, grounds, switches, connectors, wiring.

On my own vehicle, multiple bulbs were out (and had been replaced with 12V versions). A few of the grounds were lose. Switches were fine. And one of the connectors was broken internally. (And I've seen signs of someone screwing with the wiring, but so far I've not had to diagnose that.)

 

[Action]

Open your front turn signals and see if everything inside is rusty. Do not do it on your concrete driveway, in case there is water inside. It may stain the concrete.

 

[Hummer Guy]

1990 Humvee

Here is all my issues

3 Switch Turned all the way to the right-
No Headlights
Turn blinker to the right side (passenger) , turns both front blinkers on, Turns rear right blinker on Running Lights work
Turn blinker to the left side (Driver) nothing up front flashes. Nothing in Rear Flashes. Running Lights work

One Right Click over
Turn Blinker to the right (Passenger) front left signal flashes right rear flashes
Turn blinker to the left Right Front flashes, both rear flash. Running lights

High Beam Indicator on Dash lights up and turns off when pressed off and on

Problem is I can’t get the headlights to work….At all…..


Any help would greatly be appreciated or any electrical geniuses in California, Los Angels or Orange County.

Sounds like a grounding problem