Heated seat loom

Aeroelastic

Active Member
I am in uk
Oct 13, 2018
90
17
8
Cumbria
Hi, my Prado came with fabric seats but I have swapped in a full set of leather interior from a UK Colorado. I have run a 12v from the battery to run the power seat adjustment, it works perfectly. The guy i got the seats from also gave me the harness for the heated seat, with the control switches. My question is, is it a plug and play if I want to run the heated seats too? I remember the harness is connected back to below the black plastic cover where the gear lever is. I am not very electrical minded, hope someone can shed some light, thanks.
 

AndycruiserguyLomas

Well-Known Member
Supporter
I am in england
Nov 19, 2010
4,727
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113
Sheffield S.Yorks
If its anything like an import 80 it should be plug and play. I put electric leather seats in mine and all the wiring was already in place for the seats and the switches.
 

Aeroelastic

Active Member
I am in uk
Oct 13, 2018
90
17
8
Cumbria
Thanks, I will probably try over Xmas break and see if it works. If anyone has done this before please advise. Thanks..
 

MODVRS

Member
I am in england
Oct 3, 2013
125
25
28
Southampton

this came up a few years ago, reading through it again it's not clear if the loom is present or not. there are some pictures of my car with the seats out though which may help you to see what you are looking for
 
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Aeroelastic

Active Member
I am in uk
Oct 13, 2018
90
17
8
Cumbria
Thanks, the photo below is from the post you referenced. My import does not have the brown plug. I used to have a manual GX which I also installed power leather seats in, I took power from the brown plug and it worked. But for my Prado I need to run an auxiliary 12v panel with individual fuses for my leather seats.
I guess the answer is I need to run power to the heated element separately, the connector behind te centre console is purely for the switch illumination I guess?
 

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br1anuk

Active Member
Jan 10, 2016
74
21
8
Ive just fitted heated carbon seat pads onto my cloth GX seats before I fitted a set of Escape Gear seat covers over the top. Theres actually a fuse for heated seats down by the drivers right knee and I used a piggy back fuse to tap straight into that.
The kit was £28 with fast delivery and its toastie hot within 5 minutes. Best mod Ive done to my car.
Anyone else noticed how much Colorados are increasing in Value?
 

Aeroelastic

Active Member
I am in uk
Oct 13, 2018
90
17
8
Cumbria
Hi
Which fuse number is this? Or is it 2 of them, one for each seat?

went on to look for Prado electrical diagram and found the followings. I am not good at reading cable diagram, but why didnt any of the cable is related to heating element?

the information is from, sure someone will have a better understanding than me.

just checked the loom I got from the guy it’s the photo above. Think I will need more wiring to get the 12v to the seat?


thanks
 

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br1anuk

Active Member
Jan 10, 2016
74
21
8
I pulled the panel down where the fuel flap release is and you can see the small fuse block up underneath. One of the fuses was listed as "seat" on the diagram. It had no fuse in and I used a piggy back fuse with a 10 amp in it. Joined both the heated seat wires together so only had to use one fuse.
 

Aeroelastic

Active Member
I am in uk
Oct 13, 2018
90
17
8
Cumbria
Hi
Which fuse number is this? Or is it 2 of them, one for each seat?

went on to look for Prado electrical diagram and found the followings. I am not good at reading cable diagram, but why didnt any of the cable is related to heating element?

the information is from, sure someone will have a better understanding than me.

just checked the loom I got from the guy it’s the photo above. Think I will need more wiring to get the 12v to the seat?


thanks
I had a look under my dash in the center console, literally under the ashtray. There are 3 existing white plugs but none of them matched my wiring loom end (my loom is in the second photo below).

I have since went online to look for information, cant really find any 90 series wiring loom for heated seat diagram but found some 80series. in the below can anyone help explaining how the circuit in the green dashed box works? This is the HI LO switch controlling the seat heating i believe. Think they are double throws switch. So if I pressed the HI button, how does the electric run?

Trying to work out what my cables and wires are for on my loom, I kind of deduce what each of them do (see the second picture). But I struggle a bit on the big end connection Ground (2 ground 1 for back light in the switch and the other for the red wires? What if both seat heaters are on? Still run one ground? this is related to how the double throws switch works... Can anyone help if you are more converse in Electrical? Much appreciated.

I plan to just wire them directly from the fuse box and ground them based on my picture below.

Thanks.
 

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