I made two penetrations for the starter wire through the plastic case.  I kept them as small as possible so a tight, neat fight was accomplished. 

 

Connect the positive battery lead to the starter wire connected to the center post of the glow starter.

 

The negative lead from the battery must be connect to the COM terminal of the multimeter.  To make the tool neat, this would have to be done internally. Inspection of the circuit board showed I could solder to a thick copper bar.  It was electrically connected to the COM port via a direct path on the circuit board. By not soldering directly into the COM port I could perserve it for inserting the test leads. 

 

The second wire from the glow starter was then was soldered to the 10ADC port on the multimeter.  I stuck the wire to through the case wall and into the 10ADC port from the inside.  A direct solder connection was made there.

 

Insert the AAA battery, screw the case back together and your done.

 

The starter can be charged with my existing starter charger.  One can even monitor the charge rate as the amp reading works in both directions.  The meter can still be used for Volts, ohms and milliamps by installing the supplied test leads into the remaining ports.  Amp readings are no longer possible for in the 10A port however.

 

I had in the shop or flight box all the components so my total investment was $4.26 with tax for the meter.  I like it.  Combining two tools into one is always usefull.  I use it more often than the Hanger 9 starter I used previously.  The AAA cells are rated 900 mah each so I get 1800 mah total.

 

Although Harbor Freight is unlikely to have this particular model for very long, any multimeter providing at least 4 amps of capability could be adapted for use.