Heated seat electrical question - Defender Source
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  #1  
Old October 24th, 2009, 12:12 PM
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Rich Campbell
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Heated seat electrical question

Hi,

I put heated seats into my 90 yesterday. Pretty easy to do. The instructions suck though. I'm going to wire them today and am hoping someone can help me out. I'm going to jump off a fuse and ground right to the battery. Using something like the attached picture. I plan on using a switched fuse so they go off with the ignition. There is a red and orange(ignition) wire coming from the harness. (See attached)My question are?

How high of an amp fuse should I pull off of? The jumper suggest no higher than 10amps but I don't think this would be enough. Although the instructions say both seats on full pull about 8 amps.

The second question is do I need to wire the orange wire to the ignition if I'm already running the red lead to a switched power source in the fuse box.

Thanks for the help as always.

Follow-up Post:

here is a larger image

Follow-up Post:

MSH50 is the correct one...
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  #2  
Old October 24th, 2009, 12:33 PM
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Carl Jonsson
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I'd be curious to know this as well. I have the heated seats installed but I have delayed hooking them up since I am new to wiring.
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  #3  
Old October 24th, 2009, 05:57 PM
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I got a set from here with all the wiring connected to the auxiliary power and it has be great for over a year now, I put them in my wife's truck to.
http://www.sportsimportsltd.com/seat...FZho5QodVB24yg
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  #4  
Old October 24th, 2009, 06:09 PM
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Rich Campbell
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Whaat did you power to?
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  #5  
Old October 24th, 2009, 08:36 PM
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Truthfully I think I spliced it to the cigarette lighter. I will look tomorrow but it was an easy wire job with the Harness that came with the seats,
In my wife's Freelancer the heated seats were already wired just not there so I just hooked into the loom.
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  #6  
Old October 24th, 2009, 09:17 PM
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Quote:
Originally Posted by Manimal
I'd be curious to know this as well. I have the heated seats installed but I have delayed hooking them up since I am new to wiring.
what he said...
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  #7  
Old October 25th, 2009, 07:00 PM
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Ok I opened it up today and took some shots. I am no electrician but it hasn't shorted in the year since I put them in. they are spliced into the Cig Lighter.
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  #8  
Old October 25th, 2009, 07:41 PM
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You spoiled brats with consoles to hide your wiring. Us manual trans guys (that's "guys with manual transmissions" not "trans-guys") have to either do the job right and run wires out the bulkhead, down onto the frame, and back into the seat box, or we have to cheat and run wires under the matting. You guys with autoboxes just get over.
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  #9  
Old October 25th, 2009, 07:50 PM
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Michael,
Cool compass. Where did you find that ?
Doug
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  #10  
Old October 25th, 2009, 08:01 PM
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Quote:
Originally Posted by Maryland 110
Michael,
Cool compass. Where did you find that ?
Doug
looks aeronautic to me.....cool idea though for sure.
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  #11  
Old October 25th, 2009, 08:05 PM
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Quote:
Originally Posted by Maryland 110
Michael,
Cool compass. Where did you find that ?
Doug
I can not take the credit I'm second owner the first was a Navy Pilot. He said it came out of one of his Jets. It's an Airpath They are not the cheapest compass for a rover but I do like the way it looks there.
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  #12  
Old October 25th, 2009, 09:27 PM
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Thanks for the advice..my cig lighter runs my Sirius radio....I will give it a try and see it it can Handle both. I like where you put your switchs. I have a sw and mine wouldnt fit there...I put them inside the armrest box...I just could'nt cut holes in my auto Console.....made me chringe.
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  #13  
Old October 26th, 2009, 01:25 AM
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most cig lighters tend to run at 10-15 amp. if you have both seats going, and you decide to use your cig lighter for something, you will likely pop it unless it is some low draw consumer electrical device like a phone or Ipod.

I directly wired both of my heated seats to an auxilary fuze bus I put in the battery compartment. both seats run off a relay, with a small gauge wire from both running to the switched lead cigarette lighter (only enough juice for the relays for the seats-virtually nothing).

if you are going to pull 8 amps off the cigarette lighter, you may want to go with a resettable circuit breaker fuse, unless you like replacing fuses. they have them at most auto parts stores.

I would also make sure that each seat has it's own fuse, unless you believe in misery loves company when the fuse goes out.
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  #14  
Old October 26th, 2009, 02:36 PM
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This is where I need some advice......First do I need to hook up the Orange ignition wire as shown on the above diagram if I run my red wire directly to a switched source. I might just jump the cig lighter since it is 20amps....I was going to try the radio but that is only 10amps.......
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  #15  
Old October 26th, 2009, 03:39 PM
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IIRC, all power for the seats comes directly from the battery, the other lead is just an "activation lead" to prevent the heaters from operating when the ignition is off. You won't pop a fuse by turning on the heaters unless you wire them wrong.
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  #16  
Old October 26th, 2009, 04:09 PM
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That's right, you can run the power for the heater elements through the relays directly to the battery via the proper fuse (I'd use one fuse per seat). Then find an ignition hot like the cigarette lighter to power the switch that will energize the relays.
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  #17  
Old October 26th, 2009, 06:07 PM
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Thanks... Will give it a try.
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  #18  
Old October 26th, 2009, 06:57 PM
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now that I know I cheated I need to go back and run the power from the fuse. I knew I was taking the short way but figured if it worked why knock it. sorry for giving the Bad advice.
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  #19  
Old October 26th, 2009, 07:21 PM
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I don't think your advice was bad...you didn't blow a fuse so it is probably ok.
My only concern now is the jumper I got shown in the photo says not to exceed 10amps..I'm not sure how you can feed off a fuse without using one of these..I'm sure someone can tell me how to do that. I know this is probably a dumb question but I don't know Jack about electrics and I don't want to fry anything.
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  #20  
Old October 31st, 2009, 09:16 AM
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So I finally got them working. What I did is run the power line (Red) right to the battery and did the same with the ground. I then used the jump I showed in the earlier post to jump off of the the fuse that controls the cig lighter. Since this was switched the seats turn off with the ignition.

Thanks as always.
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