Where Would You Start in Diagnosing Right Front Blinker Non-Function

[ne_plus_ultra_1]

My right rear blinker works fine, front doesn't at all...

Where would you start in diagnosing it?

 

[TWeatherford]

Maybe you're a little low on blinker fluid. Sorry couldn't resist. Or you might need a new bulb. Or possibly clean the connector and lube with dielectric grease.

 

[ne_plus_ultra_1]

Good suggestions.

The first thing I did was check the timing on my serendipity. It was good so I checked the air in the back tire.

Really I did start with checking bulb (brand new but checked anyway) and socket to which there is no voltage. I didn't start chasing wires or anything.

 

[typ4]

check the ground on that corner of the body, does the headlight work? Park lamp?

 

[NJGearhead666]

my truck did that and I tracked it down to needing a new blinker switch on the column. what year is the truck?

 

[Dsl_Dog_Treat]

check the ground on that corner of the body, does the headlight work? Park lamp?

I'm with Russ on this. The ground wires should be in the harness and near the passenger side battery area on the inner fender.

 

[subway]

my truck did that and I tracked it down to needing a new blinker switch on the column. what year is the truck?

yep could be the switch in the dash, the front and back are seperate in the switch.

start with tracing the wires though before you start pulling the wheel to test.

 

[ne_plus_ultra_1]

1997 body, 1994 IDI wiring.

I believe the switch worked well before conversion so I will chase wires first.

I guess I should consult wiring diagrams for wire colors...?

All the other lights in that corner work as well as the other filament of the bulb. I suppose I should have provided this info earlier to potentially rule out a ground...?

 

[NJGearhead666]

1997 body, 1994 IDI wiring.

I believe the switch worked well before conversion so I will chase wires first.

I guess I should consult wiring diagrams for wire colors...?

All the other lights in that corner work as well as the other filament of the bulb. I suppose I should have provided this info earlier to potentially rule out a ground...?

my switch worked great too then one day the right rear wouldnt blink but the front would be. I cleaned all the grounds put new bulbs in and then i took the column apart and used the test light on the switch. All 4 blinker bulbs have 4 seperate contacts when ford went to the switch with they made the wipers and turn signals one assembly.

 

[ne_plus_ultra_1]

Ah good. I'll check that first then.

-ultra

 

[subway]

my switch worked great too then one day the right rear wouldnt blink but the front would be. I cleaned all the grounds put new bulbs in and then i took the column apart and used the test light on the switch. All 4 blinker bulbs have 4 seperate contacts when ford went to the switch with they made the wipers and turn signals one assembly.

yup, Ford is not the only one that did that to. each corner has its own contact.