Turn signal diode

HUPP34

MEMBER
1997 HONDA PRELUDE
2.0L
4 CYL
2WD
MANUAL
211,000 MILES

Hey guys, I am having problems with my turn signals on my car hazards still come on and it is not the combo switch or a fuse or a relay. I have been ready and seen it is a diode above the under dash relax tapped to the harness but cannot seem to find it. Any help so I cannot be sketchy about my signals.

Thanks in advance

9 Replies

HARRY P

MECHANIC
2,293 POSTS

If I were a betting man I would put money on the flasher/relay. It is in the attached picture. Just because the hazards are still working does not necessarily mean that the turn signal part of the relay is not failing. They are basically two separate relays put into one.

Good luck and keep us posted.

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Friday, January 19th, 2018 AT 7:42 PM

HUPP34

MEMBER
2 POSTS

I would not bet anytime soon if I were you (kidding).
But I appreciate the feedback it was the diode.

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Saturday, January 20th, 2018 AT 7:29 AM

HARRY P

MECHANIC
2,293 POSTS

Well I guess that is why I am not a betting man. Good to hear you got it fixed. Please feel free to come back here any time.

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Saturday, January 20th, 2018 AT 6:58 PM

JUSTIN SAMS

MEMBER
3 POSTS

HUPP34 where did you find a replacement diode? Someone cut mine out. My turn signals do not work on any of my gauges.

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Friday, November 16th, 2018 AT 2:48 PM

KEN L

MASTER CERTIFIED MECHANIC
42,884 POSTS

Hello,

I would check fuse #13 for power here are the blinker and instrument cluster wiring diagrams so you can see how the system works with a guide to help you check for power at the fuse with the fuse locations as well. The diode is above the interior fuse box taped to the wiring harness.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find.

Cheers, Ken

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