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Old 07-26-2020, 04:10 PM   #1
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Geo Tracker wiring

Hello, My new to me tracker was already set up as a toad with portable removable, tail, brake and turn signals for the back of the vehicle. All was wired in with a 4 pin wire harness. Not liking the look I bought the diodes 2 for each side, wired as instructed and all appeared to work until you put on the motorhome brakes, then the turn signal would go solid ( quit blinking) on the toad. MH is 2000 MAGNA with separate turn signal bulbs. Tracker also has separate turns. Anybody know the fix, short of running more wires ( separate turns) from MH to back of toad. Diode instructions show toad bulbs sharing duties however, just not working right. Thanks in advance.
P.s. The portables were one bulb two element.
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Old 07-27-2020, 10:46 AM   #2
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3 wire to 3 wire

I gotta start this over. The 1996 Geo tracker Toad was setup with portable tow lights, 2 wire connected to 2 wire their MH. My setup is a 3 wire on MH and factory 3 wire on Toad. I guess I need three diodes on each side of rear on toad, tail, brake and turn. I guess Iíll need more wire back there since the previous setup had only a 4 wire flat. I get the purpose of the diodes just donít know how to light up all markers. How do I get all marker lights on Toad to light? Do I try and find the wire up front that runs all lights. Fuse for lights feeds other items otherwise thatís where I would go. Help is appreciated if anyone has experienced this. Thanks in advance.
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Old 07-28-2020, 09:08 AM   #3
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We did it. We got a standard kit. Only the rear lights are lit. Everything is done at the back. The kit comes with a 4 wire harness but you can use whatever part you need. Instructions are included. We use a Brake Buddy for the brakes so we used a wire to bring 12v to the Trackers battery so it would not get sucked dry.Check Amazon.
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Old 07-28-2020, 10:17 AM   #4
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On several of my toads, I made all my connections up front at the toads turn signals and running lights. I used 5 amp diodes in series with the wires to prevent the motorhome lights from getting powered by the toads lights.

When wired like this, the toads turn signals also operate as the brake lights. Some toads (my 2006 Camry) the rear turn signals are amber. I considered replacing the rear amber bulbs with red bulbs but never did it.

On my 2013 Hundya Sonata, the front turn signals evidently are not wired to the rear. In this case, I only wired the running lights. I use this car on a dolly, so the dollies turn signals operate.
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Old 07-29-2020, 10:54 AM   #5
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The marker lights come on along with the tail lights, but if you are making the connection back at the taillights, the diode prevents that. You need to either make the taillight connection further forward or run a branch wire to the marker light section of the tail light circuit.


I don't know that you need the diodes on that vehicle - not all of them have backfeed problems to prevent and older vehicles often were fine without them. You might try just leaving the diode off the taillight circuit.


How is it working with just 3 wires? Are you relying on the tow bar for a ground? You need 3 wires for tail/marker, and left & right turn+brake, plus a ground wire to assure a reliable ground from toad to coach. You can get flaky results without having a solid & reliable ground.
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Old 07-29-2020, 10:57 AM   #6
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That is almost surely a sign of a faulty ground. I mentioned that in your other topic about this (3-wire to 3-wire).
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