17 replies to this topic

[Trickyt66]

Hi all, looking for some help on off side front indicator not working. Got voltage to the two wires but cannot get anything either through bulb holder or direct to bulb. Bulb good as near side are working ok and swapped bulb across. I have side and rear lit up when indicator stalk on but nothing light wise to the front. Any help would be greatly appreciated , thanks.

[nicklouse]

Sorry voltage to the TWO wires? 
 

should only be voltage to one and the other to earth.

[Trickyt66]

Sorry, to clarify I have the two wires live and neutral 12v on the live but cannot get bulb to light with earth to bulb side, holder or main body.

[Davidmt]

If you can get bulb to light with 12v positive to one side and a bridge to chassis on the other then you either don't actually have 12v to one side, the bulb has failed or you don't have a suitable earth point. Have you checked the bulb etc?

Edited by Davidmt, 14 April 2024 - 09:34 PM.

[Trickyt66]

I have, good bulb, same voltage read on the meter as the opposite side. I've taken complete unit out and wired direct to battery,, bulb lights no problem .Hazards aren't working, is that because no bulb in front or do I have a flasher unit problem ? But then the nearside ones are working fine!?

[Verderad]

Where are you measuring the voltage?
In the rear of light bulb holder (can’t think what that would be called?)
Or are you measuring the voltage at the loom behind the front grill?

I had to strip mine down and solder new wire.

[Trickyt66]

Direct to the loom wires, so assuming wiring is ok and no blown fuse.

[stuart bowes]

assuming you have confirmed 12v right up to the back side of the lamp holder, and that lamp works fine when you swap it to the other side then the fault must be with the lamp holder, some sort of looseness in the bayonet fitting that stops the contacts touching correctly, etc

 

I'd order a new one, or you could try swapping the lamp holders left to right and see how that goes

[Trickyt66]

Yes I've thought of that too so I've tried wires direct to bulb that I know is good . It should light up but doesn't!?

[Davidmt]

Assuming the bulb is neither polarity directional or an LED then you either don't have 12v or a ground if other systems work and it's not the battery or ground leads.  You also say some of the hazards aren't working so I would suggest you double check the wiring as suspect they are related and you don't have continuity within the offside indicator loom.  If the nearside hazards are working then doesn't sound like the relay - seems more likely to be the wiring.  What I can't understand is that you believe you have a 12v feed and a ground at the bulb - obviously you can't have if a good bulb does not work so you need to rethink that part and check the loom etc.

[stuart bowes]

Sorry can you describe the process where you're wiring direct to the known good bulb

Are you using spare wire to connect directly from the back side of the lamp holder (where 12v was tested and confirmed) to the lamp for example and are you just holding that on temporarily by hand, or you used some sort of connector, or what (pics may help)

Just trying to get accurate info because something doesn't seem to add up

Am I reading it right the side and rear indicators on that side are flashing because obviously that eliminates a number of issues

Edited by stuart bowes, 15 April 2024 - 09:38 AM.

[sonscar]

A voltmeter can measure 12v when there is insufficient current to light the bulb.A test lamp is very useful for fault finding as this shows the lack of current.With most 12 v car systems the voltage is less important than is it there or not.You will have high resistance on the 12v line somewhere as you have tried multiple earth's.Steve..

[Trickyt66]

Connecting loom wires direct to both the bulb first, then the bulb holder both if which gives no result. Hazards are not working at all. When testing loom wires to bulb holder, ignition on, indicator stalk on, side and rear indicators light up constant ( no flashing ).. at this point I have good voltage on the two wires to the front indicator.

[stuart bowes]

are these LED's or normal lamps

 

 

point to note the hazards are supplied separately to the indicators, that fault could be the hazard switch / relay (or the connections to the rear of the switch maybe)

 

when it's in the on position it supplies all the indicators from the hazard relay

 

when that's in the off position it sends voltage to the individual indicator circuitry via the indicator relay

Edited by stuart bowes, 15 April 2024 - 11:10 AM.

[Ethel]

As above, you can have normal voltage, but very  little current. If it's in bits hook up the 12v & try earthing it elsewhere. Also check you have the polarity the right way round, if the +ve is on the earth it might be going straight to earth via indicator mounting & bypassing the bulb.

 

The hazard fault can't be linked, unless there's a short that's taken out the fuse - which is shared with the interior light. Assuming it's a carb model.