• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
seat heater power
#1
runninpony 
HAPPY 4TH to you ALL! 

Should I connect my seat heaters to constant or switched 12 Volts and where would be a good location to do so? The heaters have an inline fuse 20 amps I believe. Thanks for your input!

Old Mustangs never die, they just go faster!
  Reply
#2
Switched power (unless you want to discharge your battery when you forget to turn the heaters off) via a relay connected to the battery terminal on the solenoid.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
[+] 1 user Likes Don C's post
  Reply
#3
Hmmm...I would recommend ACC power for a couple of reasons. One, the RUN-only power line current capacity is limited by the ignition switch and that wiring, only good to about 20 amps at best. The ACC power has much more capacity and if you have the buss bar extension on the fuse box, it already has a 20 amp fuse. In either case, as soon as the key goes to OFF, no power to the seats.

Let me check your shorts!
http://midlifeharness.com

[Image: Flamicon2.jpg]


[Image: oldfart.png]
  Reply
#4
I like MIdlife's suggestion.

If you have a convertible or a car power windows and with the convenience group option, I was going to suggest using the accessory wire harness which has inline fuse straight from the battery of the relay or junction box. It provides power to the convertible top motor, the power window relay on the shock tower, and runs under the front seats to the seatback release actuators in the seatbacks. This seatback release wire harness under the seat also has an unused two plug 12v Positive/Ground wire for the power seat option typically found in Cougars, but it is non-switched so you would have to add a relay connected to a switched power source. I extended this unused power seat wire to my center console under the ashtray where its connected to a cigarette lighter receptacle for charging my phone or MP3 player.


[Image: Drivers_Seat_Wiring.jpg]



[Image: 20160826_143024.jpg]

Judy Grahn poems

1973 H Code Convertible - Medium Copper Metallic - June 8, 1973, Built Ford Marketing Sales Vehicle
[Image: DSC_0266xsm.jpg]
[Image: satellite.png] Proud Space Junk Award Winner!












  Reply
#5
runninpony 
Thanks everyone, ACC power it is!

Old Mustangs never die, they just go faster!
  Reply
#6
Does each seat heater have a 20 amp fuse, or do they both run off a single fuse?



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
  Reply
#7
runninpony 
Don C, each seat heater has it's own fuse!

Old Mustangs never die, they just go faster!
  Reply
#8
Personally, I would run it the way I said in the earlier post. I wouldn't add that much load to the ignition switch.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
  Reply
Share Thread:  


Possibly Related Threads...
Thread Author Replies Views Last Post
  Why Isn't There Any Power to #3 Fuse for Instrument Panel Lights? Rumblefish 5 212 09-24-2018, 02:36 PM
Last Post: Don C
runninpony Rocetman's Seat Belt Reminder Relay NOT A T5 0 186 08-23-2018, 06:31 AM
Last Post: NOT A T5
  One wire alternator wiring Electric Power steering pump Robsweden 6 315 08-16-2018, 01:17 AM
Last Post: Robsweden
  Power Window Not Working BeerDontCount 6 337 05-28-2018, 04:19 PM
Last Post: BeerDontCount
  71 power windows Bondobax 2 407 02-20-2018, 10:18 AM
Last Post: Carolina_Mountain_Mustangs
  Heater fan CoolCat33 2 322 11-12-2017, 07:56 PM
Last Post: CoolCat33
  71-73 Power Seat BrandonDindorf 4 1,127 06-01-2017, 07:54 PM
Last Post: Carolina_Mountain_Mustangs
  71 Master power window switch Vincent 3 624 05-14-2017, 05:50 PM
Last Post: Carolina_Mountain_Mustangs



Users browsing this thread: 1 Guest(s)