Recommended Wiring Harness for Flat Towing 2019 Kia Soul Behind Motorhome

Updated 02/12/2021 | Published 02/11/2021

Products Featured in This Question

Roadmaster Hy-Power Diodes (Qty 2)

(351)

$31.44

Blue Ox Patriot Portable Flat Tow Brake System - Proportional

(489)

$1406.81

Demco Kar Kaddy X Tow Dolly w/ Disc Brakes - Tilt Bed Frame - 4,800 lbs - Wide Tread

(47)

$3599.00

Roadmaster Diode 7-Wire to 4-Wire Flexo-Coil Wiring Kit

(142)

$160.91

Roadmaster Battery Charge Line Kit for Towed Vehicles

(1350)

$40.90

Roadmaster Direct-Connect Base Plate Kit - Removable Arms

(3520)

$575.00

RoadMaster 68" Single Hook, Coiled Safety Cables - 6,000 lbs

(670)

$62.59

Question:

I have a 2019 Kia Soul! i plan on towing behind my Winnebago Minnie. I would like to connect to the Kia wiring harness. What do you recommend. u guys are the experts.. Thanks

asked by: David G

Expert Reply:

From what I've found online, your Soul is capable of being flat towed if it has a manual transmission. If it does not, you'll need to use a tow dolly like the Demco # DM9713093 Kar Kaddy X.

If the vehicle can be flat towed, I'd recommend using the # RM-15247 Diode System which provides a 6 circuit umbilical to connect the motorhome with your Kia Soul. Four of the circuits would provide power and ground for the taillight functions, and the remaining two could be used for a power feed to the Soul's battery using a charge line kit like part # RM-156-25 from Roadmaster. Since the supplemental braking systems draw power from the towed vehicle battery, having a maintenance charge delivered to the battery would be important. Many supplemental braking systems use a hardwired monitor in the cab of the motorhome that will alert you when the brakes of the towed vehicle are being applied. The remaining circuit can be used for that purpose.

You'll also need a base plate kit like # RM-522115-5, a tow bar like the Roadmaster Falcon All-Terrain # RM-522 safety cables like # RM-643, a supplemental braking system like # BLU37TR and possibly a high/low adapter if the installed height of the base plates differs more than +/- 3 inches from the height of the receiver on the motorhome. I'll link you to an article that explains how to determine if you need an adapter.