Heated seats swap, RX7

Hi all.

I'm doing a seat swap from a 2005 RX8 to a 1985 RX7. They are power and have the heated seat option. I figured out the power seat part and will be making a harness. Since i'm doing that I might as well take advantage of the heated seats and hook them up. It's a simple design. The thermostats are with in the heating elements, so the switches will just consist of 2 on/off toggle switches.

The problem i'm having is with the relay and what relay to use. I went to Mazda to see if I can find out what the amperage of the heated seats relay is, but I ended up leaving after the frustration of having to speak with useless people. Check out the wiring diagram on page 130 of this pdf file: http://www.hi-impact.org/ryang/modify/rx8_manuals/13_Electrical.pdf

And here is this pic of the relay. Notice the other similar ones that run other crap;

They couldn't tell me the amperage for those relays. Now can I use a standard sptd relay? I don't see why I couldn't. I just got to figure out the amperage right? EEsh! How can I find out?

Thanks for your help all!

The positive wire that gets connected to the normally opened side is protected before the relay by the main fuse 120amp then that wire goes into a 20 amp fuse that is in the fuse block labled "seat warmer". The positive side of the coil comes from the ignition and looks to be connected with the a/c fuse and that is 7.5 amps.

So I could use a fusible link and be ok with a 30/40 spdt relay? That's great news!

Hi all. I'm installing heated seats on my RX-7 and here is a diagram of how it's wired up from the vehicle I removed them from. I'm going to use a 20A SPDT relay.  Can someone please help me figure where toput where on a spdt relay?  I don't want to screw it up and would like advice from you guys. Also would regular lighted toggle switches be ok to use?

Thanks all for your help!

https://img.photobucket.com/albums/v388/TEGFREAK/relaywiring.gif

https://img.photobucket.com/albums/v388/TEGFREAK/relay.gif