Likely the seat motor
Probably the seat motor
You can find the seat wiring diagram for the Mark VIII in a Haynes repair manual. The book is available at book and auto parts stores.
Unplug the electrical connections and remove the 4 bolts.
my Chevy blazer power seat on my 1996 Chevy blazer isn't working
You are probably better off getting your seat recovered. If you would happen to find a good one then you would have to be super lucky to find your color.
In the doors and back seat panels 5X7 and of course the tweeters are seperate, I think like 2 inch.
I would bet the seat is causing the problem. Get it positioned properly and then unplug it so it will not draw power. Then replace the fure and see if it lasts. If it doesn't blow then the seat motor is the culprit.
Push in on each side of the seat cushion and it should unlatch and for the back you should see the bolts that hold it and once you remove the bolts push up on the backrest and it will come out.
take out the controlpanel in armrest and clean and chek the relays
driver seat and power mirrors is not working...what to check for??
Adjust your seat to the desired position and press the set button, the light will flash, you have 5 seconds to hit either 1 or 2. If you don't do it in 5 seconds it will go back to the original settings
Because everything has a lifespan. Or maybe it's a fuse.