blinker problems

[sbujtas]

i have a 97 bronco xlt. when i put the left blinker on the front blinker works perfectly but in the rear, both the left and the right blinkers go on and flash. When i put the right blinker on, the front right works fine, but the rear right does not come on at all. I know the bulb isnt burnt out because like i said it comes on when you hit the blinker left. I think its a wire crossed somewhere. Where do i start? I just bought the car and dont know what the previous owner did to make this happen.

Thanks

 

[miesk5]

yo,

You have a 1992 Bronco, correct? BTW, I am da Typo King! weally!

when turning on one circuit (by means of the Multi-Function Switch (MFS), turn signal/ws wiper washer, flash to pass, switch) it causes another to come on partially, check the ground for the lamp that was turned on first. This is caused by current going thru da bulb filaments & finding a ground for the other lamp...."

Ground Locations in 92-96; "...Haynes manual. They list 10 separate grounds... A-J. A. Starter mounting bolt B. Right front of Engine compartment near the battery C. Lower left front of engine D. Right front of engine compartment on upper radiator support. E. Left front of engine compartment Upper radiator support F. Bottom of cowl panel G. Rear of left fender apron H. Behind bottom of right cowl panel I. Left rear corner of cargo area near rear lamp assembly J. Under center rear of vehicle on rear cross member..."

Source: by Haynes via BroncoJoe19 (Joe) at Ford Bronco Zone Forums

One Turn Signal Lamp Inoperative

Damaged miniature bulb.

Damaged indicator flasher.

Open circuitry.

Individual Turn Signal/Flasher Lamp Inoperative

Open circuitry.

Damaged multi-function switch.

Damaged indicator flasher.

Turn Signal Lamps on Continuously

Short to power.

Damaged multi-function switch.

right front turn/park is at G101 at RH (passenger side) side of Radiator support

http://content.chiltonsonline.com/content/images/WD/Ford/177/WD_Ford_177528.pdf

left front turn/park is @ G100 at LH side of Radiator support

http://content.chiltonsonline.com/content/images/WD/Ford/177/WD_Ford_177521.pdf

check for corrosion etc

Wiring Diagram in 92-96 Bronco & F 150; for lighting only, Multi-Function Switch (MFS), turn signals, head lights, hazards, etc.



Source: by seijirou at SuperMotors.net

Grounds in a 92 by Chilton

Left turn thru connector C431

right turn thru C432

and then to splice S406 left & S405 right respectively then to Ground G100

diagram by Mikey

Here is the rest of the ckt back to MFS etc.

to C406 Left and C405 right

joins again @ Splice 401

& S400

then to C205 (firewall connector)

then to C202

Here is conn pin-out diagram for this Firewall Connectors C202 & C205

Here is the diagram showing C202 & C205 location in engine bay by Mikey

Turn, High & Low Headlight Dimmer, Flash-to-Pass, Hazard, Multi-Function Switch (MFS) & Brake Light Testing & Wiring Diagram in 92-96; "...the MFS testing is done with connectors disconnected; it's strictly an internal test of the MFS;

Miesk5 NOTE; Brake Light & Turn, High & Low Headlight Dimmer, Flash-to-Pass & Hazard CKTs are a Feed-Through Circuit in Multi-Function Switch (MFS)

Turn Signal Removal Video in a 94; MIESK5 Note, Suggest Right Clicking this Hot Link & Open in New Window

Source: by pfun41 at youtube.com

 

[miesk5]

yo,

Rear Turn, Stop, & Hazard Wiring Diagram in a 92 from MFS by Chilton

http://content.chiltonsonline.com/content/images/WD/Ford/177/WD_Ford_177587.pdf

both sides use ground G100

 

[miesk5]

yo, Sorry; I have lsot Comcast cable at least 4 times since I first replied; I see that you logged in, so I woun

t edit the prev replies so that you moss more info;

Here is the Front turn wiring diagram from Fuse to sockets and thrum MFS and to grounds

http://content.chiltonsonline.com/content/images/WD/Ford/177/WD_Ford_177585.pdf

 

[B-Co Kid]

im not sure if this applies to your newer model b-co, but i have an 87'. i had a helluva time trying to figure out why my blinkers weren't blinking properly. Turns out, the the way the bulb fits into the socket is kinda weird. you press the bulb in and turn (clockwise i think) to secure the little ****** on the end of the bulb into the groove inside of the light socket. if you push the bulb in more than necessary, it will still lock in and feel as though it is fitting into the dedicated groove on the socket, when actually it is pressed in too far. the sockets are quite easy to find at autozone, oreilly, etc. if all else fails, i would suggest, purchase a new socket and bulb. install correctly avoiding the situation i just described. not saying it will solve your problem, but it might!