View Full Version : trailer breaks questions???
04-03-2005, 08:32 PM
I put a teconsha voyager brake controller in my 95 and have a few questions. First let me say everything has been working fine so far. 1. checking my trailer plug on the truck I have 12+ volts at 2 pins. One is the 12v aux as normal where I get 12.8v and I also get 12.33 volts at my brake control plug?? is this normal? never noticed before. 2. Trailer end, typically on the break away wires that go to the trailer battery is the black or white the + or does it matter? If you want to charge the battery while hooked up do you run a seperate wire to the battery +?. 3, when hooked up I get oddly enough less than 1v on the black and nothing on the white with no battery in the trailer. Ive been running with the white on the + side of the battery, when I check it for ohms I get a reading from it which makes me think its grounded but yet nothing has burned up or stopped working. Im confused here?????
If the pin is pulled on the breakaway doesent it just complete a circut and apply 12v to the trailer brakes or does it complete the ground? :confused:
04-03-2005, 09:29 PM
My trailer wiring schem from Pollak does not show the brakeaway and aux brake batt. The std wiring code for the flat blade 7 way rv plug is White for term 1 ground, Term 4 black is batt charge, term 2 blue is brake. It sounds like you hooked up the batt backwards. Check for reverse voltage on the batt before you correct the wires. Batteries can reverse charge after they are run down to 0 volts and hooked up backwards. If it is, drain the batt to 0 then charge it correctly. It should be fine. I think the brakeaway is hooked to the batt pos and the other end goes to the brake wire.
As far as the volts on the brake term in the plug, I think there is a voltage there all the time and when it senses a connection in the controller it will activate the controller so it turns on the brakes when you hit the brake pedal. There is a sensitivity adjustment on the right side you adjust while driving and touching the brake pedal to adjust the amount of current to the brakes so the wheels don't skid or apply the brakes harder. There should be a set of instructions that came with the controller that explains it better than I just did.
Hope this helps. If you need more info let me know. I have a scanner that I could copy the schematic and e mail it to you if you want it. I don't know how to attach it to this thd.
04-03-2005, 11:33 PM
I was thinking trailer brakes have power to them all the time and the ground is what activates them but I dont think thats correct. The instructions of all ive installed are adamant about hooking the ground to the battery not the chassis. also the 12v lead to the controller is pretty small as is the factory brake activation wire for the signal.
about the battery going reverse ive actually been using a fully charged everytime full size 850 cca battery that was the turck batt but I upgraded to a 1000 cca batt cause im running a single batt. It would be nice to have a full schematic of correct trailer wiring on a trailer including break away and axles.
04-04-2005, 12:30 AM
My only schematics are from the pollak book and they are a few years old. The new catalogs don't have the schematics anymore. If I had your e mail address I could send you a copy. I don't know how to attach it to this response.
You say small wire from the controller for brakes? Check to see how many brakes the controller is able to activate. I think there are 2 or 3 sizes to choose from.
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