Wiring the Electric Brakes - Fiberglass RV


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Old 05-07-2003, 10:49 AM   #1
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Wiring the Electric Brakes

I had a welding shop add a 2 inch spacer in between the frame and the axle yesterday.

What a difference. Now there's no chance of draggin the rear when going down a steep driveway. And i have an extra margin of saftey when on back roads.

Anyway, the shop disconnected the wires for the elcectric brakes (which i knew in advance) so when i got home i set out to test and reconnect.

I discovered that the two wires coming out of the Casita were two different colors (blue and white), but the wires from the axle are both green. So i removed the wheel and connected the wires on one side, then hooked up to the car and but a brick on the brake pedal. I had a 50-50 chance of getting it right the first time. Of course the brakes worked. Did the same thing on the other side and it worked the first time again.

That got me wondering, statistically i had a 25% chance of getting the wiring right the first time. Which is not bad, but my luck is never that good.

I began to theorize that maybe it doesn't matter how the wires are connected. Maybe that's why both wires on the axle are the same color. I know that the brakes are magnetic. That suggests that they use an electromagent. Maybe wires make one continuous loop, with the contoller acting as a switch. As you engage the brakes, the controller allows current to passs through the system engaging the brakes. More current is passed through the harder you step on them. Makes sense...


Or maybe i was unusally lucky yesterday...


Anyone out there know the answer??
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Old 05-07-2003, 11:00 AM   #2
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brakes dont care

brakes dont care if it the north pole or south pole that is being attactted to your drum when energised:cheers
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Old 05-07-2003, 01:04 PM   #3
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wiring

Al's right, it doesn't matter which is positive and which is negative.

BTW, white is negative, and blue is hot wire from brake controller
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