Wiring diagram for ford 1990 bronco II for radio

Look at the model of your Kenwood, google it and select wiring diagram. Or go on the Kenwood main site. Or go to google images with your make/model and see what comes up.
You don't say what model so we can't help.

90 Ford Bronco II: You have to put it in whichever gear you want it in before you start it or it wont shift at all. Then once you are going its extremely hard to shift into the other gears. Reverse is the only gear that sounds like its grinding.

Not sure what you are saying the problem is.
You have a red wire on the solenoid that goes to the battery and a 50amp fuse. The red and lite blue wire comes from the key switch.
Then you have a black wire that goes from the solenoid down to the starter to energize it. You have a large red wire on the starter coming from the battery to power it.

Try this site it has the diagram for 83-88 bronco 2s.......

http://www.auto-wiring-diagram.com/1258-start-ignition-wiring-diagram-of-1983-1988-ford-bronco-ii.html

Go to AutoZone and look in the '88 Bronco II repair section and look in engine or chassis wiring. It has good wiring diagrams that can be blown up to be able to read them.

Here's the diagram for the fuse panel under the dash. There is also a fuse panel under the hood next to the air filter.

Try backing up straight about 50 feet and try it again.

You probably blew a fuse in the back of the radio, or in the fuse box. Check both to be sure. And remember, always disconnect the battery before you do something with the wiring harness.

the easiest thing you can do that will give you step by step directions. Go to http://www.crutchfield.com/ or call 1-800-319-8264 and tell them what car and what radio you have. They will sell you a adaptor and face plate with step by step directions. Everything you absolutely need.

tepfy

yes go to lmc truck and look up the wiring part for your truck