C5 Hyperflash with LED's

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May 18, 2015 | 02:17 AM

#61

lionelhutz

Thread Starter

Race Director

Joined: Apr 2007

Posts: 11,152

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From: South Western Ontario

Quote:

Originally Posted by T_Vert

disregard, I located the backfeed location and fixed w/ a diode.

Dave

You shouldn't need a diode. Is a bulb in backwards because that will do what you describe.

May 18, 2015 | 03:05 AM

#62

T_Vert

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Joined: Oct 2003

Posts: 6,126

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From: Streamwood illinois

Quote:

Originally Posted by lionelhutz

You shouldn't need a diode. Is a bulb in backwards because that will do what you describe.

Nope they are all oriented properly. I do have euro taillights w/ a euro harness if that matters any. Had to cut a wire at brake pedal per instructions.

Dave

May 18, 2015 | 10:15 AM

#63

lionelhutz

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Joined: Apr 2007

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From: South Western Ontario

Quote:

Originally Posted by T_Vert

Nope they are all oriented properly. I do have euro taillights w/ a euro harness if that matters any. Had to cut a wire at brake pedal per instructions.

Dave

Yes, I understand how the Euro lights are wired. There is no reason it should cause a backfeed if done properly.

May 18, 2015 | 10:51 AM

#64

T_Vert

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Joined: Oct 2003

Posts: 6,126

Likes: 19

From: Streamwood illinois

All I know is that w/ regular bulbs it worked fine and a few others have mentioned the exact same issue w/ euro tails which sent me there first. I noticed if I removed the brake light LEDS then the problem went away. Even w/ 1 brake bulb in the issue occurred. I then wired in a diode and the problem went away. The LEDS only work when oriented one way so I'm assuming they were in right.

Dave

Last edited by T_Vert; May 18, 2015 at 10:55 AM.

May 18, 2015 | 11:23 AM

#65

lionelhutz

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From: South Western Ontario

It sounds like crappy bulbs then.

May 18, 2015 | 01:33 PM

#66

T_Vert

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Joined: Oct 2003

Posts: 6,126

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From: Streamwood illinois

Perhaps, They have stellar reviews and no real complaints or similar issues so I don't know.

Dave

May 28, 2015 | 04:43 PM

#67

gerry98

Intermediate

Joined: Jan 2015

Posts: 36

Likes: 3

From: Hopkinton MA

Success!

lionelhutz, thanks for all your help on this. I was able to cut, splice and solder a 3 prong flasher and all works well!!

Aug 22, 2016 | 02:49 PM

#68

jmz06

Racer

Joined: Feb 2009

Posts: 427

Likes: 8

From: FRANCE

Quote:

Originally Posted by T_Vert

Sorry to bring up an old thread but does anyone know where to source the GM plugs for this harness to eliminate cutting? I know a few forum vendors get them and make their own harnesses. I can't see paying $70 for a flasher and 2 plugs honestly. I have the flasher but I need to obtain the plugs. I've gotten a ton of weatherpack plugs and even some GM pigtails from I think it was Del City but I cannot recall as it's been years since I've needed them. Anyone have any input? Anyone have a GM part # or casting # of that flasher plug?

Dave

Hi Dave,
I don't know if you still looking for the GM part numbers for both connectors

Female 10 ways 12064769
Male 10 ways 12064770

Terminals female
12064971 Gauge 22-20
12047767 Gauge 18-16

Terminals male
12059894 Gauge 22-20
12047581 Gauge 18-16

and more connectors here > http://terminalsupplyco.com/pdfviewe...tors&page=p063

Last edited by jmz06; Aug 23, 2016 at 03:45 AM.