# Turn signal problem '88 F-250

**URL:** <https://community.cartalk.com/t/turn-signal-problem-88-f-250/69135>\
**Category:** Maintenance/Repairs\
**Tags:** f250, ford\
**Created:** [November 1, 2011, 2:04am UTC](https://community.cartalk.com/t/turn-signal-problem-88-f-250/69135 "2011-11-01T02:04:57Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![arryla](https://avatars.discourse-cdn.com/v4/letter/a/9fc348/32.png) [@arryla](https://community.cartalk.com/u/arryla)\
**Post date:** [November 1, 2011, 2:04am UTC](https://community.cartalk.com/t/turn-signal-problem-88-f-250/69135/1 "2011-11-01T02:04:57Z")

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Turn signals inoperable. Already checked flasher(replaced), fuse, bulbs, with power to fuse and flasher circuit. Only have rear lights flashing on hazard flasher. No corrosion on bulbs and clearance lights and other lighting works fine.

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**Author:** ![87\_Ranger](https://avatars.discourse-cdn.com/v4/letter/8/f14d63/32.png) [@87\_Ranger](https://community.cartalk.com/u/87_Ranger)\
**Post date:** [November 1, 2011, 5:00pm UTC](https://community.cartalk.com/t/turn-signal-problem-88-f-250/69135/2 "2011-11-01T17:00:24Z")

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Sounds like a bad multifunction/turn signal switch.

Testing the switch is simple enough. From the FACTORY electrical troubleshooting manual for my 87 Ranger:

With Eflashers turned off connect an ohmmeter to multifunction switch pins 44 & 9 & set switch to left turn. Good switch equals closed circuit. DO the same with pins 44 &3. Good switch equals closed circuit. Simple a that.

See if [helminc.com](http://helminc.com) has the eletrical troubleshoting manual for your E-250

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**Author:** ![87\_Ranger](https://avatars.discourse-cdn.com/v4/letter/8/f14d63/32.png) [@87\_Ranger](https://community.cartalk.com/u/87_Ranger)\
**Post date:** [November 1, 2011, 5:27pm UTC](https://community.cartalk.com/t/turn-signal-problem-88-f-250/69135/3 "2011-11-01T17:27:48Z")

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Just checked & Helm does have the 88 f-250 manual, it’s 15 bucks. For fixing this and your next electrical problem you cant do better than this.

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**Author:** ![ken\_green](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ken_green/32/816_2.png) [@ken\_green](https://community.cartalk.com/u/ken_green)\
**Post date:** [November 1, 2011, 5:59pm UTC](https://community.cartalk.com/t/turn-signal-problem-88-f-250/69135/4 "2011-11-01T17:59:58Z")

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The switch

- OR –

The plug on the back of that switch.  
It is common for the little lock tabs inside the grey gang plug to break allowing the wire ends to work loose ( especially for those who tilt their wheel a lot ).

A new gang plug body can be purchased at the Ford dealer.