95 F250 PSD electrical grief

Mar 18, 2005 Last reply: 21 years ago 3 Replies

Hope to get some help with an electrical gremlin.



Some symptoms are:



Torque convert or intermittently unlocks with use of turn signals.



While driving with Cruise Control, it will shut down when using turn signal.



Also unhappy when I use trailer brakes.


I've been told to put a diode in the lines to the brake lines to avoid back feeding.



What size diode? Just wire in series near the light bulbs?



Any experience here?


Your Cruise Control shutting down when using your turn signal is caused by a bad ground in one of your tail lights.

You can determine which tail light has the bad ground by which turn signal causes the cruise control to stop, if your left turn signal causes it, then your right tail light has a bad ground.

Peter Arnold wrote:

check your thrid brake lite it is most likely bad bulb

Most likely there is an open ground on the turn signal circuit. That could include all brake lights being burned out.

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