1998 Mark VIII power seats - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Interior
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 09-07-2004, 11:42 AM
Registered User
Join Date: Sep 2004
Location: Northwest
Age: 77
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
1998 Mark VIII power seats

Hi -

I'm building a 55 Chevy HT and recently found a pair of 1998 Mark VIII power seats for it. But I'm having difficulties in getting the seats to operate.
Only need the basic front/rear, up/down controls for the seat - no need for the memory stuff.

What I've found so far.... Under the driverís seat are two sets of connectors, one white (12 pin connector) and one black (14 pin connector); under the passengerís seat is one white 12 pin connector.
The white connectors have 11 pins connected. Nine of the wires in this connector are about 16 gauge except for a Red wire and a Black wire, each are about 12 gauge wire and I assumed are Hot and Ground.
When I connect 12V to the Red and ground to the Black - the only switch that works is for the lumbar motor.

Has anyone ever installed 1998 (they may be different for various years) Mark VIII seats in a hotrod?
Can you tell me what is needed to get them to operate?
Anyone know of a source for a wiring diagram?

Recently someone mentioned that these seats use a memory module and that it may be located in the drivers door? Does anyone know if this memory module can be bypassed - putting power directly to the switches?

Thanks for any help you can provide.

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 09-07-2004, 11:56 AM
Last photo:
Join Date: Aug 2003
Location: Detroit, MI
Posts: 139
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I have the same seats.

I went to the dealer and got the schematics.

Mine are wired to operate the movement and lumbar I did not wire the memory in (did not try).

Give me a fax # or an address to send copies to.
Reply With Quote Quick reply to this message

Recent Interior posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -6. The time now is 10:30 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.