Quick Jump Menu
Info Ask a Question
Advanced Search Search the Knowledgebase
RDAC XF and XF MAP Reference Ground to Engine Block
Author: Matt Liknaitzky Reference Number: AA-00237 Views: 10538 Created: 2012-07-04 14:01 Last Updated: 2014-03-14 11:37 0 Rating/ Voters

The RDAC XF and XF MAP Pins 5 and 9 on the DB9 connector are connected Directly to Engine Block Ground

Note: It is acceptable to Setup a Ground Bus on the Firewall where all of your senders that require an Engine Block Ground are Grounded. This Bus should be wired to the Engine Block with very heavy gauge wire, and you can then use it for Grounding your RDAC Ref Ground and all sender Grounds that do not Ground through the Block itself, as in this example (shown with an older RDAC model):


Important: Read this article on why an Engine Block Reference Ground is critical for accurate engine sender readings. If your oil temp, oil pressure and RPM / tach engine senders are not reading correctly, this is the first thing to check.


IMPORTANT NOTICE: You must make your own determination if the products sold by MGL Avionics are safe and effective for your intended applications. MGL Avionics makes no representations or warranties as to either the suitability of any of the products we sell as to your particular application or the compatibility of any of the products we sell with other products you may buy from us or anywhere else, and we disclaim any warranties or representations that may otherwise arise by law. Also, we offer no specific advice on how to install any of the products we sell other than passing along anything that may have been provided to us by the manufacturer or other users. If you are in need of further information or guidance, please turn to the manufacturer, FAA Advisory Circulars and guidance materials, the Experimental Aircraft Association, or other reputable sources.