ignition switch, no start Options

[doobie123]

hi all,
just received a new ignition switch from auto atlanta, those guys are great!

installed it but still no start. the car will start by jumping the battery to the solenoid with the key in the run position but still wont start with just the key. i should say that i have not put the rest of the steering wheel/ directional switch back together in case it did not work.
could this effect it?
also it looks like someone before me took the large yellow and yellow/red stripe wire under the passenger seat and hooked them together to bypass the seat belt switch. in addition that relay under the seat and the wires going to it are in bad shape and the mount for the relay has rusted.
i'm looking for any suggestions that i could try so please, any help would be great.
thanks

[doobie123]

ok, here is an update on the ignition.


what i found was the large large black wire goes to the battery hot, the yellow goes to the relay under the passenger seat, the red wire goes to the hot side of the battery, and in the bottom of the pic, you can see 2 wires with a sort of plug on them. one grey, one grey with a red stripe. they both go to the ignition switch but both were disconnected. when i jump the grey and red wire to the solenoid, presto! the key works. no change with the grey wire. so is that it
, problem solved? connect the grey and red to the solenoid and happy days! but, why were they disconnected? what is the grey wire for and whats with the plug ends? was the solenoid a aftermarket one without the correct plug?