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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: 6805eagleguy on May 18, 2020, 07:30:26 PM

Title: Turn stop tail wiring
Post by: 6805eagleguy on May 18, 2020, 07:30:26 PM
Turn stop tail wiring

Ok, what is the best method for the turn to override brake on a 3 wire setup.

One wire high power, one wire low power, and one ground.

I have heard of a 4 to 3 convertor, is that a thing? Do they last?

Thanks!
Mason
Title: Re: Turn stop tail wiring
Post by: buswarrior on May 19, 2020, 04:59:48 AM
Had a 4-3 converter for a trailer at the camp, just after the Millenium.

It was deployed according to the vehicle that was designated each summer, depending on what it showed up with for lighting.

Worked great.

Reese has been in the game for a long time.

https://www.reeseprod.com/products/electrical-wiring/taillight-converters/ApGK9QTbwGDeEwuFhzLz49SNUt1AhT7t

Happy coaching!
Buswarrior
Title: Re: Turn stop tail wiring
Post by: chessie4905 on May 19, 2020, 04:15:55 PM
Consider changing any single filament sockets back there to dual filament ones and deal with it that way, without going to another electronic component.
Title: Re: Turn stop tail wiring
Post by: 6805eagleguy on May 23, 2020, 07:04:15 AM
Everything is led, ended up getting a 4-3


On another note, what is the brake switch cut in psi supposed to be?


Thanks
Title: Re: Turn stop tail wiring
Post by: freds on May 23, 2020, 09:19:24 AM
Another thing to consider is possible voltage difference with the bus being 24v and the trailer 12V. Previous owner of my bus complained that it cost him $400.00 to put in a converter, where he could have probably gotten by; by converting the trailer to LED lights.
Title: Re: Turn stop tail wiring
Post by: 6805eagleguy on May 23, 2020, 11:27:23 AM
True Fred, but eagles are 12v, and my rear turn stop tail lights are led 3 wire.

For a trailer I can just pull straight off of the rear lights.
Title: Re: Turn stop tail wiring
Post by: rusty on May 23, 2020, 07:05:35 PM
The crack pressure of the brake relay is like 2 lbs. A switch with the same activation pressure will work. Go to Bendix and get the correct answer not from some old wore out mind.
Title: Re: Turn stop tail wiring
Post by: Scott & Heather on May 24, 2020, 05:22:36 AM
I haven't had the best luck with the converters. They just go bad on me. I am actually in the process of adding separate amber turn signals inside my reverse light housings on my Ford Expedition to remedy the issues. I'm sure there are easier better ways but it's my way. I just think ambers are more visible in a sea of red tail lights anyway.
Title: Re: Turn stop tail wiring
Post by: 6805eagleguy on May 24, 2020, 04:02:00 PM
Thanks Wayne.

Scott, I am going a little overboard on lights on the back of the bus...lol

I guess I'll have to take the chance on the converter going bad, if it does I guess I can assemble a conglomeration of relays and diodes to do the job.
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