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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: zslates on May 07, 2011, 04:53:57 pm

Title: New trailer wiring, fast blink turn signals
Post by: zslates on May 07, 2011, 04:53:57 pm

I just got done wiring a 7 pin trailer connector and it all seems well until I hook up the trailer.. the turn signals flash much quicker.  Do I just need a new Heavy duty flasher?

Title: Re: New trailer wiring, fast blink turn signals
Post by: zieg85 on May 07, 2011, 05:34:35 pm

HD Flasher should fix it up

Title: Re: New trailer wiring, fast blink turn signals
Post by: Irish_Alley on May 08, 2011, 12:06:46 am

hd or electric flasher

Title: Re: New trailer wiring, fast blink turn signals
Post by: Lt.Del on May 08, 2011, 09:30:17 am

i have a 7 pin connector on both my 79 pick up and 91 sub when pulling my 30' camper trailer.  Mine never had any problems.  I am wondering if you have a bulb out.  I do know that when a bulb is blown, the flash pattern speeds up drastically.  Any bulbs out on the trailer?

Title: Re: New trailer wiring, fast blink turn signals
Post by: zslates on May 10, 2011, 11:41:33 pm

I'm going to upgrade to the electrical/mechanical type ( vs thermal).  After learning about how thermal flashers work I'm pretty sure the increase in load is causing the symptoms.

Title: Re: New trailer wiring, fast blink turn signals
Post by: Irish_Alley on May 11, 2011, 08:59:13 am

im thinking more like sgt now a blown bulb will cause rapid flash and the more bulbs should cause slower flash. are the trailer lights l.e.d.

Title: Re: New trailer wiring, fast blink turn signals
Post by: beastie_3 on May 11, 2011, 10:07:28 pm

That is correct. Less lighting means more juice going to flasher, making it faster. Even if the trailer lights are LED, they are drawing off the same circuit.