Tekonsha Primus IQ 90160 Fuse Blowing Troubleshooting

Updated 04/20/2015 | Published 04/19/2015

Products Featured in This Question

Tekonsha Primus IQ Trailer Brake Controller - Up to 3 Axles - Proportional

(2158)

$90.04

10 Gauge Wire - Blue Primary - Per Foot

(104)

$1.84

30 amp. In-Line Circuit Breaker - Perpendicular Mount Bracket

(73)

$7.28

Question:

I had the above Brake Controller installed. They used the Cig lighter 20amp fuse for power. The controller works fine until I press the Manual lever, the lights flash, the unit clicks and the fuse blows. I tried a 30 amp fuse also and the same thing happened it just took a few seconds longer. Jeep Commander 2006, 5.7 Hemi. Should the BC have a fuse installed at all or should it be hard wired? Does the 06 Commander have a PLUG and PLAY harness from the factory? Im getting mixed responses from the Dealer, one says yes others are clueless. Any help would be appreciated.

asked by: John W

Helpful Expert Reply:

You definitely want to hardwire the power wire for the Tekonsha Primus IQ # TK90160 to the battery of your 2006 Jeep Commander.

However, since you said the problem is also happening with a 30 amp fuse installed in the fuse location for your cigarette lighter (this is not recommended at all), you probably have a short somewhere on the brake output circuit for the controller. Most likely this is corrosion on the front or back of the connector on your vehicle.

I would recommend you track down the short on the brake output circuit and then hardwire the controller to your battery with a circuit breaker like part # 38630 with 10 gauge wire like part # 10-1-1 sold by the foot.

Check out the help articles I attached as well.

expert reply by: Jameson C