DIN or ISO DIN?

[RMcG]

Originally Posted by RMcG

Hello,

The positioning of the ISO brackets may possibly be made easier by reattaching the trim ring before using the screws, but it seems that attaching the trim ring to the unit without the DIN cage around the unit is more difficult. That is, the DIN cage seems to help secure the trim ring to the unit. The receiver unit then slides/clicks into place in the radio housing and is held in the place by the ISO brackets. Again, the radio housing is subsequently put into the space in the Yaris vehicle.

Even if the DIN cage is not used, it still really should be removed to expose the screw holes to attach the ISO brackets to the receiver unit (radio).

R.

I just want to finish this thread to provide information to others. As evidenced by my three posts that are separated by several days, it took me a while of experimenting with the mounting and the two mounting techniques (DIN and ISO DIN) to figure this out. I think that is normal and to be expected.

Regarding my musings above, about the trim ring and the DIN cage, the trim ring (that was supplied by Pioneer with the head unit) is used with the DIN cage. But the trim ring is NOT used with the ISO DIN method. The trim ring is set aside when the ISO DIN method is used. Instead, the "trim plate" which is supplied by Metra with the 99-8216 In Dash Receiver Kit is used in place of the "trim ring" with the ISO DIN method. The trim plate and the trim ring are very similar but not the same.

In addition, for my particular head unit, I found that the trim plate should not be upside down. There is a slight difference between upside down and right side up for the trim plate. But if the trim plate is not right side up, it makes it difficult to remove the detachable receiver face, because you have to lift the detachable face up slightly when removing it.

What I said above: "The positioning of the ISO brackets may possibly be made easier by reattaching the trim ring before using the screws," is not correct. The ISO brackets fit onto the sides of the head unit in a natural way (without the trim ring being attached to the head unit) so that it is quite clear where the ISO brackets are positioned on the head unit before the screws are tightened.

I have successfully mounted the unit in my car and it is working fine. I used the ISO DIN technique, because it does not require special tools to remove the unit. But the DIN technique is also good, and, I suppose, has the advantage that the special tools needed for removal might discourage potential thieves. The video for removing the DIN cage (or sleeve), see link above, is really helpful. The Metra instructions (attached to post above) are also essential.

Good luck & Godspeed to anybody with the same question: DIN or ISO DIN for installation of a head unit?

R.