harness question PLZ help
 

I am almost done depinning/ reorganizing my harness...a 1999 silverado 4.8l and I am trying to figure out what these 4 wires need to do...
first off my dad said they came from the fuse/relay panel two wires are a heavy gauge green, 1 is purple/white, and the last is yellow... all 4 of these wires go into the section of the harness for the transmission... both of the greens, the purple/white, and the yellow all go into the 6 pin transmission plug that was glues in from the factory... i will provide a pic here asap...

Re: harness question PLZ help
 

this is the connector i speak of.... please help me guys

Re: harness question PLZ help
 

The purple and white wire comes from the crank fuse, or the start side of your ignition switch. The yellow is the wire that goes to the starter relay. The green wires are B-shift interlock, and F- back up lights.
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Re: harness question PLZ help
 

Are these needed?

Re: harness question PLZ help
 

Technically, you don't NEED them, but it's nice to have them hooked up. If your column has a neutral safety switch, you can use it. The transmission mounted ones are just a little more accurate, since any slop in the shift linkage doesn't affect it.

Re: harness question PLZ help
 

ok well i guess i could use them.. how would i wire yellow to the starter relay? and what do the greens wire to? and what does the purple wire do?

Re: harness question PLZ help
 

i had to draw it out before it made real sense to me
see attached picture the left side of the photo shows internal wiring diagram
right side shows descriptions that make sense.

hope this helps

Re: harness question PLZ help
 

thanks MR HURT