Trailer wiring

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Dec 27, 2009 | 05:34 PM

#16

rupejosh

Cargo Master

Joined: Feb 2008

Posts: 3,409

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From: back in SE Iowa

Quote:

Originally Posted by starmilt

This makes me wander if you own a rig with the E40D and upgrade your headlights with relays would it make your tranny act different.

thats a big negative ghost rider.lol i did the mod about a year ago and am glad i did

Dec 27, 2009 | 07:33 PM

#17

Dave Sponaugle

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Joined: Nov 2003

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From: Nutter Fort, WV

Actually the break away has nothing to do with the controller.

You have to have constant 12 volt power to the trailer connector to charge the trailer mounted battery though.

Then a lanyard connects to the truck on one end and a break away switch on the trailer tounge.
If you loose the trailer, the lanyard pulls a pin out of the switch and the trailer mounted battery locks up the trailer brakes.
Basically if you have or need trailer brakes, you need a break away system as well.

Dec 27, 2009 | 07:45 PM

#18

starmilt

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Joined: Oct 2007

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From: Faibanks Ak.

Isn't there a higher weight requiring the breakaway switch.

Dec 27, 2009 | 09:18 PM

#19

Dave Sponaugle

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Joined: Nov 2003

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From: Nutter Fort, WV

I think from memory brakes are required at 1500 pounds.

If you have a trailer with brakes, the WV DOT wants a working break away device.

May be different in other states.

Dec 27, 2009 | 10:20 PM

#20

Coolball

Thread Starter

Senior User

Joined: Nov 2009

Posts: 169

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From: Missoula, MT

Looks like most states average 3,000 lbs state brake laws

Dec 27, 2009 | 11:51 PM

#21

starmilt

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Joined: Oct 2007

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From: Faibanks Ak.

Yea I'm pretty sure texas was 3000 but not all had to have breakaways. At least my boat trailers don't, may be illegal though they didn't from the factory (which doesn't mean they are legal).

Dec 28, 2009 | 12:15 AM

#22

LCAM-01XA

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Joined: Apr 2008

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Quote:

Originally Posted by starmilt

This makes me wander if you own a rig with the E40D and upgrade your headlights with relays would it make your tranny act different.

Nope, headlights don't affect the PCM - brake lights is the only thing, if you go with LEDs you'll need some resistor to balance them.

Dec 28, 2009 | 12:33 AM

#23

farmert

Lead Driver

Joined: Mar 2006

Posts: 5,111

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From: western SD

Yes you can get a heavy duty flasher. Tell the parts guy you want one for 3 or more bulbs.

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Dec 28, 2009 | 12:33 AM

#24

starmilt

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From: Faibanks Ak.

Adding a resister to up the amp load kinda defeats the purpose of going with leds to cut down on the amp load. I knew there was a reason I always liked them shifters that stick through the floor.

Dec 28, 2009 | 07:38 AM

#25

LCAM-01XA

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You add the resistor to just the brake lights, and I guess if you can find the wire that feeds that signal to the PCM you can put the resistor right before the PCM, thus having low current through the brake lights (which is what you intended to begin with), and the E4OD still shifting fine.