I have a metra turbowire 70-1857 wiring harness, and i am lost at connecting it to my pioneer aftermarket DEH-1100MP. I have the harness hooked up to the amp in the trunk. and strung through car and in the dash, im ready to hook up the headunit, but that's where the problem comes in. Instead of having wires it has 4 rca cables. and the headunit only has 2 rca pre-amp inputs. is there anyway to fix that?

Order a new one. It is difficult at best to connect wires to the pins without getting a short. New ones are cheap and available from a bunch of places.

check that the illum (usually orange)wire is not incorrectly hooked up to acc or perm power as it dims the display for night driving (supposed to be hooked up to your headlight parker switch.)

Hello al_will00,

The color coding of the wires from aftermarket equipment will not match up with vehicle color codes. The new player will work OK when you have matched up the wiring by function. There's 2 ways to do it: 1) Find the color coding of your vehicle wiring and splice/tap into the existing harness; 2) Purchase an aftermarket wiring harness that plug in directly.

The 2nd option is best. It allows you to make all of the connections (usually color for color) sitting at a table or workbench insted of from behind the poorly lighted dash. It also allow you to reinstall the OEM radio if you ever decide to do so. Splicing or tapping will make it more difficult.

I'd visit one of the online retailer like www.crutchfield.com or www.sonicelectronix.com to purchase a wiring harness. You can determine the correct model number from various sources, including the manufacturer, such as Metra here. Just enter your vehicle make, model and year information to see a list that the vehicle.

Hope this helps.

Oh yes. Definately. You hook up red and yellow wires together on the positive side of battery. Black negative wire goes to negative on battery. That's all there is to it. Besides the speaker wire which you will have a diagram on the bottom of the cd player to tell you which wire is which

check the fuses first

Hello pleazallnite,

Here's a link to the wiring color code for the Mazda 626. This link is to downlaod a copy of the DEH-P4700MP owners manual. The wiring diagram is on page 50. You can simply connect the wires by function to the vehicle wiring. But a better solution to avoid cutting or tapping into the vehicle wiring is to purchase an aftermarket wiring harness. The Metra part number 70-7901 appears to be the correct harness for your vehicle and is available from Crutchfield for $12.99.

Hope this helps.

Hello zachary_reed,

What you need is an aftermarket wiring harness. These are made by Metra, Scosche, and others and are made to plug directly into the OEM radio harness. It appears that the one you want is the Scosche FB02B available from SonicElectronix. You simply connect the wires from your new receiver to the harness wires and then plug it into the factory radio plug. Another online retailer that sells aftermarket harnesses is www.crutchfield.com. Your local car audio shop or perhaps Best Buy may also have the wiring harness.

Be sure to match up the wires from your new radio harness to the aftermarket harness by FUNCTION, not by color. For example, most newer receivers will use Yellow as the 12V constant (hot) wire. The wiring color code for your F150 is shown here. Make sure that the pin on the aftermarket harness is connecting the yellow from your new receiver to the green/yellow of the OEM plug and so on.

Hope this helps.

I don't know what pins are what on the METRA harness, but the wires coming from the back of the Pioneer unit should be:


black ground
red accessory (KEY)
yellow memory constant power,
blue is remote,
orange is for the dimmer,
green with black is left rear neg.and green is positive,
violet black is right rear negative and violet is positive,
white is left front positive and white with black is negative,
gray black is right front negative and gray is positive.


If you don't have the pioneer harness (and so these wire colors dont' mean much to you) just message back here, and I'll map those wire colors to pin positions on the back of the unit.

I would like to refer you to a reputable car audio dealer.

If you have NOT yet CUT THE FACTORY HARNESS, DON'T!!!!!!!
Airbags are nothing to take lightly...

I HIGHLY RECOMMEND a wiring harness adapter from a reputable source such as METRA, Scoche, or Pozitive Connections. Every wiring harness adapter changes the colors at the "pioneer side" of the harness to color match the PIONEER RADIO. All you have to do is color match, plug and play.

HOPE I HAVE HELPED.
Scott

http://cgi.ebay.com/PIONEER-2003-16-PIN-SMALL-PLUG-WIRE-HARNESS-PI16-03A_W0QQitemZ360057114681QQihZ023QQcategoryZ32809QQtcZphotoQQcmdZViewItem


Try that i think i found it.