Can you wear civilian clothes if you are still in the military to a military funeral?

Yes, you can - as long as you are not part of an official military burial detail or honor guard.

However - in respect to the military service of the deceased, it would be honorable to wear your uniform.
Yes, you can - as long as you are not part of an official military burial detail or honor guard.

However - in respect to the military service of the deceased, it would be honorable to wear your uniform.