Ignition switch replacement

[dhanl82]

I had noticed for some time that the voltage readings at my cigarette lighter in my 82 SC were about one volt less than at the battery with or without engine running. Also that there was quite a bit of fluctuation while driving. After taking readings at the top of both "switched" power fed fuses and "always hot" fuses that the switched power was around one volt less. After some more tests I determined that the ignition switch was causing the resistance resulting in the voltage drop.
This morning I decided to change out the switch by working under the dash rather than removing the switch by drilling out the screws etc. I removed the drivers seat put some towels down to cushion my 72 year old body while laying on my back under the dash and began work. I began by removing some other plug connectors in order to be able to get to the ignition switch, I then cut off a screw driver to about 2.5 inches and then assembled a collection of other short screw drivers - some with ratchet drivers.
The bottom screw was simple but the top one was a true adventure to deal with, I finally was able to get the correct screw driver on it and removed it. Installing the new switch was about the same degree of difficulty.
In summation it took about 2 hrs. and totally solved my "switched" power voltage issue - cigarette volt meter is reading same as at the battery and all switched current fuse tops are being fed same voltage as direct feed ones.

I know there have been some threads before about this but thought I would add my comments , perhaps it might help someone else.

Dave

[john walker's workshop]

All I can say is it takes about 45 minutes to R&R the whole steering lock.

[Dmitry at Pelican Parts]

This may help as well: Replacing your Ignition Switch

[mo-mon]

Thanks Dave! I have to do this soon & I'll try to do it your way.

[Mike Andrew]

One of the least enjoyable tasks that I have performed. Too damn broad shouldered to fit comfortably in the footwell. Hands are too big to fit up in the dash.

Master cylinder is right up there as well.

[RAW911]

The switch can be replaced without removing the steering lock mechanism. There are only two screws that need to be removed. I used a HF right angled screwdriver as there is no room for even a short regular screwdriver. The right angle makes it easier to push in with your thumb and turn at the same time.



The broken switch in the wiring socket.



The steering lock mechanism with the switch removed.



Swap the switches in the plug and replace the two screws. 30 minute job.

PS: Small hands are a big help.