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    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85

    CorvairGeek
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    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 Empty Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85

    Post  CorvairGeek on Mon Jul 18, 2016 8:40 pm

    I'll start by saying this project may have been more work than it was worth, but I've got a $29 remote key less entry with the added benefit of a security system with panic alarm.

    I was interested in making my class 2 radio project turn off when the driver's door opened, rather than turning it off manually or allowing it to time out (10 minutes) and turn off. That required adding the Driver's Door Module (DDM). It only took adding the Rear Interface Module (RIM) to do key less entry (I already had the matched remote fob and receiver), so I thought I'd give it a try. By adding only one door module, I have all doors unlocking at once (the new relays just trigger the original PDL relay). I would have to add another door module to do progressive unlocking.

    I knew I needed some sort of fuse block for the needed relays, but I didn't like the idea of cutting down one from the donor car. Note this one already had most of the fuses, mini and micro relays removed;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 20160625_111335_zpssyr3xza4

    Pulling the connector off the back resulted in the perfect size 'fuse block' and donor electrical terminals;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 20160625_111347_zpspmfokyri

    Here is the start of the assembly. DDM is closest, remote receiver is on the top right, RIM is top center;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 20160612_165839_zpszutsyw1j

    I ground the mounting tabs off the DDM and RIM modules, as they wouldn't fit on top of the accelerator bracket in original form. Perfect rectangles now that can be attached to one another with Velcro;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 20160703_163610_zps1oirb8y0

    Even found back covers for the rear of the 'fuse block' from the under hood fuse blocks in various GM cars;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 20160703_163638_zpso1pr8wc3

    Inside the DDM, the power window section (far right connection) requires a lot of power. I only used a portion of the module;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 20160612_170542_zpsmzuoonht

    The remote receiver ended up in the center of the dash where there was a depression for the magnet of a center speaker audio system;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 20160706_144330_zpsgid4jtnu

    Everything wired and ready to mount;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 Fuse20and20Modules_zpsbladcoad

    The final evolution of the 'fuse block' as I was ready to install;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 Fuse20Block_zpsynfawa0p

    The entire thing installed;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 Fuse%20Block%20Installed_zpsh6yc8y31

    Seems funny to have a nice key fob with original keys that are worn smooth!

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 20160717_205008_zpschznl1mn

    My baby looks a little better than the worn keys, but a '20 footer' in her old age;

    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 Avatar_zpshcuhykvi


    I had fear of activating the built in chime system but that hasn't happened. There is a Chime Input on the Dash Interface Module that I haven't enabled or even experimented with. The car's original chimes (lights on) do activate briefly as the parking lights flash, once for lock and twice for unlocking. The horn will also sound as designed (while flashing the parking lights) if the car is opened after it is locked with the key fob, or the ignition is turned on. The only thing I left out was courtesy light control from the system.
    Xtreme Thunder
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    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 Empty Re: Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85

    Post  Xtreme Thunder on Tue Jul 19, 2016 8:03 am

    I really appreciate nice and clean "factory appearing" installs! Looks great!


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    CorvairGeek
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    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 Empty Re: Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85

    Post  CorvairGeek on Tue Jul 19, 2016 9:17 pm

    I appreciate that! Add-on stuff usually looks so bad (to me, at least when I have to look at it everyday) I can't stand it.

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    Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85 Empty Re: Another GM Class 2 Serial Bus Project - Follow Up to the Double Din in a Pre '85

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