Reddit Reddit reviews Metra 70-7901 Radio Wiring Harness for Mazda 90-01Power/4 Speaker

We found 5 Reddit comments about Metra 70-7901 Radio Wiring Harness for Mazda 90-01Power/4 Speaker. Here are the top ones, ranked by their Reddit score.

Electronics
Car Audio & Video Wiring Harnesses
Car Electronics Accessories
Car Audio & Video Installation Products
Car & Vehicle Electronics
Metra 70-7901 Radio Wiring Harness for Mazda 90-01Power/4 Speaker
Plugs into car harness at radioPower/4 SpeakerFor select 1990-2001 Mazda vehiclesNo cutting of factory wiring neededAllows for the installation of an aftermarket radio using the existing factory wiring and connectorsFor 1990-94 Mazda models
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5 Reddit comments about Metra 70-7901 Radio Wiring Harness for Mazda 90-01Power/4 Speaker:

u/antidavid · 5 pointsr/Miata

If you aren't afraid of some wiring it's really not bad to replace a head unit and you can save yourself a bunch. If you want to have someone do it you can go to bestbuy or another store that does installs. Its a lot of wires so it looks intimidating but all you need is the head unit of your choice, the bezel or surround if you still have a factory unit and optional but I do recommend is the adapter kit to plug into the stock harness. Putting it together is as easy as matching colors and soldering or just using butt connectors. It is a fairly simple process and if you mess it up the worst that can happen is it just won't turn on.

You pick a single din head unit and these are the items you need. You can do a double din but if I remember right you need a special adapter that is a it harder to find and pricier. Or you need I think one of the Japanese tombstones.

This will surround the radio and give it a cradle so you don't have blank spaces.
https://www.amazon.com/gp/aw/d/B0002BEYIQ/ref=mp_s_a_1_1?ie=UTF8&qid=1483301353&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=miata+radio+install+kit+93&dpPl=1&dpID=41meO9lqHtL&ref=plSrch

This will plug directly into the stock plug and then you just connect the wires to the radio you pick out.
https://www.amazon.com/gp/aw/d/B0002BETW2/ref=mp_s_a_1_4?ie=UTF8&qid=1483301254&sr=8-4&pi=AC_SX236_SY340_QL65&keywords=miata+radio+install+kit&dpPl=1&dpID=41byl99kQ8L&ref=plSrch

u/Lobster70 · 3 pointsr/Miata

I've replaced a couple NA Miata radios so I feel like I can comment. Whatever you do, buy the Metra wiring harness for your car. You splice it (using wire nuts) to the wiring coming out of your new head unit, and it plugs into your factory wiring connector. No cutting of your car's wires. It's the proper way to do it and you will be very thankful if you ever replace that radio again.

That out of the way, one thing to remember in a convertible is readability in direct sunlight. Most modern head units have LED displays that completely wash out in bright light. I have my eye on this mechless unit that has an LCD display: https://smile.amazon.com/dp/B07717WCVN

And finally - fitment. If you have a factory radio right now, chances are the size is not the standard "single DIN" or even standard "double DIN" because...I don't know. But if you buy the above mentioned unit, there will be a gaping hole below it and the size is odd. Moss Miata to the rescue! They sell a little cubby designed to properly fill the hole. It's stupid priced for a plastic box but it is a very specifically sized plastic box. Here's how it looks in my car below my weirdly mounted old head unit.

You should be able to mount your new head unit into the "rack" that your current radio is mounted to. It's fairly straightforward after you get things apart. That unit is lightweight too, so should be simpler to mount.

FINALLY - to get your old unit out you have to remove the center console and then the "tombstone" - which means you have to pop out your two eyeball vents. It's a harrowing thing on old plastic and there have been a few reports of broken trim. I've always been OK but I don't think I'd do it during really cold weather when the plastic is most brittle. To pop my vents I used a bit of paracord with a loop at the end. A bent piece of wire was used to fish the loop out of the opposite side of the vent, then a quick yank and out they pop. There are screws above the vents to remove the trim. You can look this all up online (miata.net).

Hope this helps.

P.S. if you have a power antenna, you likely will lose independent control of it. It will go up when you power up the radio, and go down when you turn it off.

u/BBSloth · 3 pointsr/Miata
u/sekdar · 2 pointsr/Miata

Mine was a Bose as well. I'd highly encourage you to do the swap - modern radio features are pretty neat, and you can even put in something like this if you're feeling adventurous.

According to miata.net's audio page, the head units are all pretty similar - it seems the biggest difference is determining if you need to buy either this wiring harness or this one.

Both the head unit and the harness come with instructions on which wire carries which signal, so soldering them is simply connecting A to A. Honestly, the most difficult part of the swap I found was installing the mounting sleeve in my console - the unfinished metal edges dealt me more than a few cuts due to my stubborn refusal to protect my hands.

I spent a bit of time kicking myself for not photodocumenting the head unit installation, but ah well. There's no shortage of people willing to advise on the subject.

u/Bezzle59 · 1 pointr/CarAV

Wrong harness. That's the reverse harness I.e. a replacement harness for the stock one if you cut it off. I think you meant this.