I have a delco radio model 16041581 and need a 13 pin conector or a info on how to hook it up?

It would help to know the make and model of vehicle from which the radio was originally installed. If you know that, you could probably locate a "reverse" wiring harness that fits properly. This one fits various GM vehicles.

http://www.amazon.com/MALE-REVERSE-STEREO-HARNESS-...

If you don't know the make and model of the vehicle, you might look here to see if you can recognize the specific receiver you have and then "cross-reference" it to the original vehicle.

http://oem-auto-accessory.com/factory_gm_radios.ht...

If you are still unable to locate an appropriate harness, I'd recommend trying here:

http://www.installer.com/home.php

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