Turn signals and blower motor relay

Tiny
JEFFSHAW
  • MEMBER
  • 1998 FORD F-150
  • 4.2L
  • 6 CYL
  • 4WD
  • MANUAL
  • 150,000 MILES
Turn signals do not work when blower relay is in. If I remove blower motor relay turn signals will then work until I press brake pedal.
Wednesday, August 17th, 2016 AT 6:16 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check for bad bulb in rear and clean battery terminal ends and ground going to engine and body. Also check ground at left hand front radiator support and trailer tow relays in power dist box. Battery ground at rear of engine compartment.
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Thursday, August 18th, 2016 AT 6:37 AM
Tiny
JEFFSHAW
  • MEMBER
  • 1 POST
I found the problem. It was a rusted off ground wire inside the cab on the passenger side behind plastic side cover in front of door.
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Saturday, August 20th, 2016 AT 4:18 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I kind of figured it was something like that, that normally happens when ground wire is off someplace
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Saturday, August 20th, 2016 AT 4:19 PM

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