Application Note: Walthers/Life-Like F7 H0-Scale steps needed for the DH163D DH123D decoder installation.
Remove packing protectors screwed to coupler pockets:
![](http://www.digitrax.com/static/apps/tsd/images/LifelikeF7aa.jpg)
Carefully remove shell by spreading sides at side windows:
![](http://www.digitrax.com/static/apps/tsd/images/LifelikeF7ab.jpg)
Here's an alternate method for removing the loco shell - our F7 unit had a particularly stubborn shell.
In place of the X-acto knives pictured, we recommend toothpicks or something a little safer..
![](http://www.digitrax.com/static/apps/tsd/images/LifelikeF7abb.jpg)
Remove DC Plug (or a DC Printed Circuit Board in this case) from the wiring harness:
![](http://www.digitrax.com/static/apps/tsd/images/LifelikeF7ac.jpg)
DC Plug shown removed:
![](http://www.digitrax.com/static/apps/tsd/images/LifelikeF7ad.jpg)
Plug DH123D or DH163D decoder to 9 pin wire harness and mount it as shown:
![](http://www.digitrax.com/static/apps/tsd/images/LifelikeF7ae.jpg)
Reinstall loco shell.