Question about 1991 Jeep Cherokee Limited

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One headlight works while the other head light does not- with the exception of the high beam on the left side. I think it's a relay issue, yet cannot find the relays. what do you think! it's a 1997 jeep cherokee sport ......................... where are those dang relays!!!!!!!!!!!!!!!!!!!!!!!!!!!

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  • Phil Goncalves May 11, 2010

    Have you tried changing the bulb? If you have and it's not the problem the headlight fuses or realys are under the hood on the drivers side beside the battery.



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Hi, my name is adam and i would be glad to assist you. In your inquiry you stated that 1 of your headlights are not working properly? My suggestion to this is to look at the fuse panel for lighting and see if any fusesare blown. You can find out where the fuse panel is by looking in the owners manual.
I hope my suggestion helps you find a solution.

Posted on Jan 09, 2009


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2005 GMC Sierra 2500HD, left side low and high beams out, new bulbs, fuses good. No power at the sockets. Could this be the high/low switch on the column?

It shouldn't be the high/low beam switch, as that switches the high/low beam relays. One high beam relay supplies power for both sides, one for low beam, both sides. If you were to lose switch function or a relay, you would lose the high beams or the low beams, but not for just one side. It would be interesting to probe the fuses with a test light and see if you're getting power to and through them. If you are, the problem would be between the fuse box and the headlight, if your not getting power to the left head light fuses, the problem will be in the fuse box. Good luck!

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Left headlights

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One low beam wont turn on, but both high beams will

ok if you run a power wire to the positive on battery does it go?
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My 2002 impala headlights don't work at night or in dark places like a tunnel or under a bridge, they only work in the day time. I have day time runner lights and they automatically turn on when I start my...

You can't turn them on manually with the switch . You have the switch set on auto ?
You can use the headlamps in two different ways.
• Place the headlamp switch in the ON position for normal operation.
• Place the headlamp switch in the OFF position for automatic lamp control (ALC). During ALC the high beam headlamps are On at reduced intensity for daytime running lamp (DRL) operation in daylight conditions, or low beam headlamps On in low light conditions.
The DRL/EXT LTS fuse and the EXT lamps fuse in the underhood junction block supply battery positive voltage at all times to both of low beam lamps and to the right high beam lamp. The low beam circuit continues to the high/low beam switch, then, depending on the position of the dimmer switch, connects to the normally-open headlamp relay switch contacts. Placing the headlamp switch in the HEAD position provides a ground path for the headlamp switch input of the Body Control Module (BCM). After receiving this input, the BCM energizes the headlamp relay. When the headlamp relay is energized, the low beam circuit is connected to ground G201. The high beam circuit is divided into a left and a right side circuit.
The DRL/EXT LTS fuse in the underhood ignition block supplies battery positive voltage to both the coil and to the normally-closed contact of the DRL relay switch circuit. During high beam operation, the left side current flow is through the closed contacts of the DRL relay, and to the left high beam lamp.
The EXT Lamps fuse in the top of the engine fuse block supplies battery positive voltage to the right high beam lamp. Both high beam circuits are then connected together, and continue to the dimmer switch. When the driver closes the high beam contacts of the dimmer switch, the circuit is grounded at G201.
Both the headlight switch and the BCM provide a ground, or control circuit, to the headlight relay coil circuit for manual or automatic headlamp operation. When you place the headlamp switch in the OFF position, and the ambient light sensor indicates low light conditions, the BCM energizes the headlamp relay for low beam operation. You may switch the headlights to high beam by pulling the dimmer switch handle toward you until the dimmer switch is activated. When the dimmer switch is placed in the HIGH position, the indicator lamp input to the BCM is pulled low. The BCM then sends a class 2 message to the instrument cluster in order to illuminate the high beam indicator lamp.
If the headlamp switch is left in the head position, the inadvertent power control feature will turn off the headlights 10 minutes after you turn the ignition switch to the OFF position. If you place the headlamp switch in the head position after the ignition switch has been turned OFF, or if the ignition switch is in the ACCY position, the headlights will remain ON until you turn them OFF or until the battery runs dead.

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It can be issue with headlight switch,but as its already been replaced.Try disconnecting high beam headlight wiring from headlight assembly and reconnect direct external wire from headlight switch to headlight assembly,then by switch see if headlight is getting off and turning on or not.
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I have a 1993 VW Passat VR6, My problem is when I try to start it, I have no spark from the spark plugs..What could be the problem or how do I fix this?????


This are the FUSE and RELAY number SLOT!
Fuse No. Description Ampere Rating 1 Headlight, low beam, left 10 2 Headlight, low beam, right 10 3 Instrument panel lights, license plate lights 10 4 Glove compartment light 15 5 Wiper/washer 15 6 Fresh air blower 16-valve only: Air conditioning 20 7 Taillights, side marker light, right 10 8 Taillights, side marker light, left 0 9 Rear window defogger 20 10 2.0 16-valve only: Fog lights 15 11 Headlight, high beam, left,High beam indicator light 10 12 Headlight, high beam, right 10 13 Horn 16-valve only: Radiator cooling fan 10 14 Back-up lights, washer nozzle heaters 10 15 2.0 16-valve only: Engine electronics, stabilizer valve, cold start valve 10 16 Instrument panel warning lights, 16-valve only: Multi function indicator 15 17 Emergency flasher switch, turn signals 10 18 Fuel pump, oxygen sensor heater 20 19 Radiator cooling fan, air conditioning 30 20 Brake lights, cruise control 10 21 Interior lights, digital clock 16-valve only: Luggage compartment light,multi function indicator, central locking 15 22 Radio, cigarette lighter 10
Relays Relay No. Description 1 Air conditioning 2 Open 3 Digifant control unit 4 Load reduction relay 5 Low coolant level control unit or Open 6 Emergency flashers 7 Rear Wiper 8 Intermittent wipers 9 Seat belt warning system control unit (possibly headlight warning too?) 10 Fog lights 11 Horn 12 Fuel pump (except diesel)Glow plugs (diesel) 13 Radiator cooling fan after run (except 16-valve)2.0 16-valve: Starter interlock relay 14 Automatic trans., coolant temperature indicator,starter interlock relay (except 2.0 16-valve)2.0 16-valve: Radiator cooling fan after run 15 ABS pump relay 16 ABS relay 17 Heated seat control unit, driver 18 Heated seat control unit, passenger, or power seat circuit breaker 19 Automatic transmission 20 Open 21 Power window relay, ABS hydraulic pump fuse 22 ABS valves fuse 23 Air conditioning, power seat fuse 24 Power window fuse

Nov 17, 2010 | 1993 Volkswagen Passat

1 Answer

Relay box location. there is a problem with the drivers and pasangers window wont go up or down and the head lights dont work but the side lights will. therefore i think its the hrad lights

Fuse for window regulator (circuit breaker) on 13 position auxiliary relay panel. The wiring connectors are located at the lower left and right side kick panels. The auxiliary relay panel is located above the lower kick panel above the pedals.

Headlight fuse location:
#18 High beam right 10A
#19 High beam left 10A
#20 Low beam right 15A
#21 Low beam left 15A

Daytime running light relay location on upper (auxiliary) relay panel. This are the only ones using relays regarding your question.

From April 1999
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Through March 1999
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Might as well check the orange headlight control unit first, as it is an extremely common issue, and will only take you 20 minutes. Here is a step by step tutorial with pictures to examine and repair it. The tutorial is from a 1995 900 but is fully applicable to your car.

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Strange headlamp problems on Saabs can often be attributed to a failing Headlamp relay. Here are a few common situations:
Issue1 - Headlamp switch will work backwards: Turn on the switch and theheadlights go off and turn off the switch and the headlights will goon.
Issue 2 - High beams will disappear. You will have nohighbeams. Be sure to check the headlight bulbs PRIOR to ordering therelay. Remember however that it is possible for both high beams burn out at the same time
Issue3 - High beams will not work only the low beams will.
Issue 4 - A single bulb setting (low or high) on either side will not work and bulb replacement will fix it.
You can sometimesfix these issues by removing the relay, taking off the cover andresoldering the connections on the relay bottom. To perform this repair, go to my illustrated tutorial at
In some cases youwill have to replace the relay to effect a long term cure. The aftermarket replacement can be had at for about $60.00:
Name: Bulb Check Relay
Part Code: 4109070A
Brand: sm_311e0dbd-c670-4bed-a50a-1ba3424ef87d.jpg
Description: Bulb check relay for any 9000 92-98, 900 94-98, 9-3 99-03, 9-5 all.

KAE (Kaehler) made in Germany.
Price: $59.90

Nov 19, 2008 | 1999 Saab 9-5

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