MFA earth?

MFA sometimes work but most of the times doesnt. Is there an earth for this thing?

Not sure but oh how I yearn for an accurate MPG from mine.  :cry:

groan!  more MFA problems!  I am beginning to think the problem lies in the processor (square brown bloc on the MFA circuit board)

still working on this.  - thinking - thinking - if your MFA works sometimes and not others, you have a loose connection somewhere- and could be various places

Is the clock reliable?
MP

the clock doesnt come on either

intermittent power it would seem

see if this helps

or this…

There's a brown and white wire that should be connected to the rocker cover. Thats the earth for the MFA but other dash related things often go screwy too if it comes off.