Hey folks. Been reading a lot here for a while. Lots of good information. I recently bought a 07 S Crew Lariat. I installed heated seats and used the blank plug behind lighter and park assist.(powers traction control and instrument cluster)
I can run both seats on low.... but switch one to high or just put one on, on high, it pops the 5 amp fuse. Yhe truck is wired for heated seats and even has the fuse.....
how do I tap into that?

 

Anyone?

 

Have you tried bumping the fuse up to a 7.5 or maybe a 10? I know it's not what you really want. But I have no idea about heated seats or the connections it would use.

 

I have put a 10 amp fuse in but have not tried them on high yet. Each seat draws 5 amps on high and 3amps on low. The wiring included relays and switches and inline fuses. With just a hot and ground.

Description; Each Seat Includes Two Pads - One for the Seat Back and One for the Seat Bottom. Two Kits are included to Accommodate two seats. Each Heater Has Three Settings - High, Low and Off. Dual Temperature Control System. Electronic thermostat (built into each pad) regulates the electricity / temperature circulating within the carbon fiber seat heating pad. This system regulates the flow of power and maintains a narrower temperature range whether in a high or low setting. Example: The high setting will have a constant range between 120°F to 125°F. The low setting ranges between 110°F to 115°F. These respective temperatures are maintained at these respective levels. Backrest & Seat Bottom Heating Pads -- 11" x 17.5" Pads are approximately 1/32" thick. Either pad can be installed in back or bottom. Length can be trimmed to any size. Electrical Specs Wattage: 24~36 Watts per Pad, 48~60 Watts per seat Current Draw: 3 Amps on Low Heat Setting and 5 Amps on High Setting per Seat. It is a 12 volt system.

One thing I have noticed, on low the switch should light up green, on high the switch lights up red. The switches were pre-wired. On low, drivers seat switch lights red, on low passenger seat lights green and after several minutes changes to red. Obviously I have some more work to do.......

 

You could try this.

 

So 60 Watts / 12 Volts is 5A. That is your fuse size. It looks like the fuse has some other loads on it also. NEVER replace a fuse with one larger than what the circuit is rated for. You may burn your truck down. Why not use the 'lighter' circuit? It is usually fused for 20 A or so.

 

The ligter circuit is not a keyed circuit

 

OOps. I was thinking of my aftermarket heated seats. They require a switched circuit for control and a powered circuit. You could use a relay with the coil connected to the small 5A circuit and power the seats from the lighter circuit.

 

They are aftermarket and came with relay and inline fuse. I am going to try the above park from busmann on an unused keyed circuit. Only thing is, I checked several circuits and all that I checked were hot with key off. I'm refering to fuse panel in cab.

 

Use the radio fuse.