I did something stupid. I swapped a 1994 2.3 with a 1999 2.5

[Mike4390]

Now CEL dosent work... I found a connector that has a green/black and a red wire. When I probe it it makes pcm relay click. Its from 99 truck and know place to connect it in 94. This may be my problem.

 

[RonD]

Light green/black and red, 2 wire connector, in engine harness, would be for EVAP Purge solenoid in 1999

 

[Mike4390]

can I just ignore this connector? I somehow disabled the hazzard lights and horn now. All fuses good and I dont believe I disconnected them. How do I test? Its from 94 harness.

 

[RonD]

So you have 1999 Engine fuse box and 1994 Cab fuse box and ignition switch?

1994 cab fuse 4(hazards) and 8(horn) both got full time 12volts from a fuse in the 1994 engine bay fuse box, it was a 60amp fuse
yellow/light blue wire from 1994 cab fuse box thru firewall connector and same color to 1994 engine fuse box

 

[Mike4390]

So you have 1999 Engine fuse box and 1994 Cab fuse box and ignition switch?

Yes

 

[RonD]

Yes, you can ignore that EVAP connector for now, engine will run but you will get a CEL

1999 engine fuse box may have Maxi Fuse 3, 50 amp, for 4wheel ABS system, it would have a yellow/light green wire coming out of fuse box
You could use that for hazard/horn in cab fuse box