Kevin68

My 68 came with the interior out of a 74 (or so I was told), including the steering column. I am putting a replacement steering column in and the key back in the dash where it belongs.

My problem is that only four wires were used in the ignition wiring for the 74 column and my new ignition switch has 7 lugs. I'm sure this explains why I don't have operational courtesy lights or key buzzer. The four wires I have are #12 Red, #12 purple, #12 pink, and #12 Brown. Using my multi-meter, I've verified that these wire sizes and colors go where the wiring diagram says they should. The wiring diagrams don't describe which wire gets attached to which lug. I can't find a replacement plug from any of the vendors.

Can somebody confirm either with a picture or experience, where each wire gets connected on the new switch. From looking at the wiring diagrams, I've deduced that:
#12 red to "BAT" lug,
#12 purple, to "SOL" lug
#12 pink to "IGN"
#12 Brown to "ACC"

"GRD" is obvious and I will run a wire to ground. So my last two lugs are "KEY+" and "KEY-" 0ne is a #20 black wire that goes to the left door jamb switch - my Lectric Limited and AIM diagram shows this to be a white wire, but a colored wiring diagram I got off the forum shows it to be black. There is a #20 pink wire that is supposed to go to the horn relay, which I have not located. This wire change to pink/black past the bulkhead connector and I have confirmed that there is a pink/black wire on the horn relay. I'm assuming that the #20 pink is "Key+" and the #20 black is "KEY-." I'm hoping somebody can corfirm or correct my assumptions.

Here is the new switch:

Rescue Rogers

I'll get you some info tomorrow, Saturday>

Peterbuilt

I'm just following along to try to learn something.


https://docs.google.com/viewer?a=v&p...jI1NDMyY2I3YzQ

https://docs.google.com/viewer?a=v&p...TRkNTFkY2E0NmM

Rescue Rogers

Oh God , i hope I dont screw this up now....

Rescue Rogers

just found a pic that will show the light bulb holder for the ignition and a few wires. I'm going to put this in your other thread too

Kevin68

Haven't seen that diagram before. Thanks. I've got the AIM, Service Manual, Lectric Limited, and one other color one that I picked up along the way.

This drawing captures the essence of my question:



Of the two wires shown coming out of the ignition switch above, I'm pretty sure they go to the key + and - terminals on the ignition switch. Which one is which. The pink/black I think goes from the key + to the horn relay, and the black (white on some diagrams) wire goes from the Key- to the LH door jamb switch.

Rescue Rogers

my diagram shows clockwise

BATT= red> power in from horn relay
KEY+= pink wire\black stripe>key alarm in horn relay
GRND=not used
KEY-= black >to LH courtesy and key warning light
IGN=pink> powers fused connection lower 2 right fuse block, goes to multicolor wire to power coil
SOL=purple> power to starter solenoid, (nuetral saftey switch, not used in my early 68)
ACC=brown=power to accesories top right 3 in fuse block and goes to/from voltage regulator
[/QUOTE]

Rescue Rogers

you are correct

The outside of the relay has all your car power being distributed via the buss bar. Very weird design, save money i guess

Kevin68

Thanks. Your PM noted that your diagram indicates the ground is not used, as do the ones I have. I was going to add a ground figuring, more grounds are better but you have a good point about potentially frying something...Although I doubt that switch is wired in a way that connecting a lug that is labeled "GRD" to ground would cause a short, but who knows. I believe this is the same switch that is used on Camaros and Chevelles and the ground may be intended for those cars.

Rescue Rogers

true but why tempt fate