hey guys what's up? I have a 77' F150 4x4 that i swapped in a 460, np435 into. It used to have a 351M and a C6.... it also used to have the auto column with cruise. When i did the swap i also switched in a standard shift, non cruise column. when i did this i had the column's disassembled, which meant taking all the wires out of the end of the plug in's. I made a careful diagram of this and put each wire where it was... i'm 98 percent sure i didn't screw it up... but for some reason something's not right, so maybe it's my fault, i dunno. But now the left rear brake light does not work, nor does the left rear turnsignal.... the only other thing that doesn't work is the horn... i posted in the 73-79 forum, and dennis in there said i could put the cruise control pad back on and use the on/off button for the cruise, however this didn't work for me... so i am hoping someone can tell me what to do next... both of these items worked b4 i swapped out the columns...and the light isn't a burnt bulb, already checked the simple things... i pulled the connector that feeds electrical power to the rear of the truck and with a test light, checked for power and nothing. Thanks to all who reply...

 

The brake power runs through the turnsignal switch. That same colored wire that is at the rear for the left side, should be up in the column going to the turnsignal switch too.

Find that wire, and with the signal lever in the mid position, probe that wire in the column, and see if you have power when you push on the brake pedal. If you don't, then unplug the connector that you used and see if you can find three wires that are hot when you push on the brake(lever in mid position still).

One will be the green wire (I think it's green)coming into the switch from the brake pedal switch. The other two will be the ones that go to the rear for the turn/brake lights.

If you can't seem to get power on the correct wire coming out of the switch, then I would suspect the switch is bad.

 

Did you not remove the cruise wiring from the equation ?

With Cruise:The pedal assembly has 2 brake switches.
The Brake light switch is attached to the nub up on the end of the Master cylinder push rod.



The Cruise shut down switch is the plunger switch on the side of the pedal





Here are some column wiring & TS switch wiring schematics.


http://www.clubfte.com/users/mil1ion...rakeWiring.JPG

http://www.clubfte.com/users/mil1ion...lconnector.jpg

https://www.ford-trucks.com/article/...MN_WIRING.html

 

got it to work!... turn signal light/brake light was just the switch not making good contact, little adjustment and it was good... horn took a lil longer to figure out... i had disconnect the cruise dennis and didn't help... but that was b/c i must have written down my wires wrong when i unplugged all of them from the column harness, b/c i had to move one for the horn and it now works with the on/off button on the cruise. Thanks so much guys...it feels so good when all ur lights, and horn works. lol