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Wow! I thought this was going to a relatively simple job but was I in for a surprise. (My nearest autosparky is 250 kms hence the DIY approach was needed.) The Auto Pro unit was installed as per instructions with one sticking point and that is where the take-off should be for the red brake trigger wire. I ended up joining it to the existing wire which connects to the trailer socket that lights up the trailer's brake lights.
I decided to test the system by hooking up a light globe to the socket earth and number 5 pin (the blue wire). Turning on the engine resulted in clicking from the engine bay. The starter motor did not crank. I checked the main fuse box and nothing looked amiss but then I spotted a 30 amp fuse labeled Towing. That set me wondering whether the 2015 Prado came with some form of built in brake control. When I pulled that fuse the Prado started normally but I am not game to tinker further and disconnected the Tow Pro. REDARC speaks of some vehicles needing to have a diode fitted if the brake trigger wire is connected up to the vehicle's brake light circuit - is this the case with the 2015 Prado? What can you advise?
I decided to test the system by hooking up a light globe to the socket earth and number 5 pin (the blue wire). Turning on the engine resulted in clicking from the engine bay. The starter motor did not crank. I checked the main fuse box and nothing looked amiss but then I spotted a 30 amp fuse labeled Towing. That set me wondering whether the 2015 Prado came with some form of built in brake control. When I pulled that fuse the Prado started normally but I am not game to tinker further and disconnected the Tow Pro. REDARC speaks of some vehicles needing to have a diode fitted if the brake trigger wire is connected up to the vehicle's brake light circuit - is this the case with the 2015 Prado? What can you advise?
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