Resistance wire removal or replacement.

If installing an electronic ignition system the resistance wire most likely has to be removed or bypassed. There are several ways to do this and the solution depends if you have the 1963/64 4-speed Hydra-Matic transmission or the 1964 3-speed Turbo Hydra-Matic transmission. There is also a Ignition Power Relay supplied by PerTronix but that will not be discussed in this thread.

If your car is equipped with the 3-speed Turbo Hydra-Matic the easiest way is to remove the resistance wire from the coil and secure it or remove it completely. After that take a new fresh wire and connect it to the switch on the transmission downshift. The pink wire going from the ignition switch on the dash to the switch, is the same wire the resistance wire is connected too. So just connect to that pink wire and you are home-free.

If your car has the 4-speed Hydra-Matic life is a bit more tricky. So now its time for some pictures and explanations.

1. The red arrow is pointing to the brownish resistance wire. It is normally taped together with the yellow wire (starter solenoid) and the green wire (temp gauge). 2. At the yellow circle the wires will go three ways and you have to open this up. 3. The blue circle is showing the wires going through bulk-head into the cock-pit.

Here is the device on the bulk-head partly removed.

Here is all opened up and as suggested by Jason Edge you should be able to carefully pull out the resistance wire and free it from the pink ignition wire. (Red arrow is pointing to the resistance wire)

However on my car it was not possible to pull trough the hole in the bulk-head and I had to do the job inside the instrument panel. To facilitate the job I removed the dash and the steering column lower cover. Found the connection between the two pink wires and the brownish resistance wire.

Removed the tape. (Hard to focus with the phone camera)

Connected the two pink wires (the ignition switch and the fuse box) with the new wire to the ignition coil. If you have a Turbo Hydra-Matic you will have three pink wires here instead of two, as the third wire is going to the transmission downshift switch.

When this job is done you have to secure it all again and pay attention to protection of the wires.

Here the new red wire is connected to the plus on the new ignition coil together with the yellow wire from the starter solenoid and the wire from the electronic ignition. The green arrow is for the green wire to the temperature gauge.

After this new rotor, distributor cap, spark plug wires and spark plugs. Remember that you might have to increase the gap size on the spark plugs as you now will have a hotter and cleaner spark. Depending on plugs used you might have to increase distance to 0,035-0,040".

When all is set and done. Start your car. Run it until normal working temperature and do a complete ignition timing adjustment as per 1964 Cadillac Shop Manual page 12-17 to 12-18 (I don't have a 1963 Shop manual so don't know the pages in that book).

Good luck

Views: 3053

Reply to This

Replies to This Discussion

I tapped in at the kickdown switch. You can go to pink "ignition wire behind dash (which feeds the kick down pink wire), or go all the way back to the fuse box. For 1964 Cadillac owners with the Turbo Hydramatic and the kickdown switch, that is the easist "switched 12 volt source". 

RSS

Photos

  • Add Photos
  • View All

Forum

Classic Cadillac Parts For Sale - Misc Items

Started by Jason Edge in For Sale. Last reply by Jason Edge 40 minutes ago. 287 Replies

I have posted a few Misc items over on my Classic Cadillac Parts Facebook page at…Continue

Tags: classic cadillac parts, classiccadillacparts

64 caddie Brake drums

Started by mark zimmerman in 1963/64 Cadillac Specific Discussion. Last reply by Tony and Ginny 429 1 hour ago. 2 Replies

Are the front  brake drums the same as the rear ones? I had my garage install new drums on the car and now at 25-35 mph the car shakes like the  front wheels are going to fall off. Car has new brakes…Continue

Caddy Cruising with the Family

Started by Jason Edge in General Discussion 14 hours ago. 0 Replies

I've had a great couple of weeks entertaining family since Oct 11, and the 64 Caddy has played a big part.  Knowing aunts and uncles and many other relatives would be joining us for a celebration of…Continue

64 front passenger fender removal

Started by Chris Mcdougal in 1963/64 Cadillac Specific Discussion. Last reply by Jason Edge 16 hours ago. 1 Reply

Hey guys I have search around the discussion boards and can't find anything.. but trying to get this passenger front fender off of my 64 deville 6 window got all the obvious ones and the one behind…Continue

Tags: removal, Fender

Blog Posts

Rochester throttle body gasket

Posted by Phil on September 29, 2021 at 8:18am 5 Comments

Hello,  would anybody be able to tell me if I’m using the correct gasket on my Rochester throttle body? It doesn’t  look right to me.  I’m not sure if the carb actually ran with this gasket because I got it used with no history.  Any help would be appreciated …

Continue

Rumble Sound at 55-60 mph

Posted by Ray Schick on September 20, 2021 at 10:45pm 6 Comments

64 Coupe DeVille , while driving at 55-60 mph I have a oscillating rumble sound . Steering wheel does not shake or vibrate . Transmission mount looks good .Tires were replaced 2 years ago balanced and rebalanced recently. Axel bearings were just replaced, rear differential assembly was just replaced with a Posi track ,pinion bearings good. Fresh gear lube. Driveshaft checked and balanced the other day ,new center bearing installed and new bearing carrier assembly too. Trying to figure this…

Continue

1963 series 62 convertible transmission issue

Posted by Matthew VanDeWater on June 22, 2021 at 3:03pm 1 Comment

Hello I've been restoring a 63 for way to many years. Down to almost done, but have issue with trans linkage, when column in park shift rod 2 inches short. everything original. been trying to find picture of manual rod hooked up from under car to see position of linkage. was wondering if anybody has access for pictures. I wanted to see if my manual linkage is bent  wrong out of the trans if somebody dropped the trans or something. Doesn't make sense why it doesn't work. Thanks for any input…

Continue

New vehicle in the club

Posted by Patrick Westphal on June 17, 2021 at 4:00pm 1 Comment

I was successful in getting a vehicle from the New York contact I talked about at the last club meeting. I am still trying to figure out how to post a picture of the vehicle that is tied with this comment so if you see a random picture of a black convertible in a yard, that's me haha.  …

Continue

Events

Videos

  • Add Videos
  • View All

© 2021   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service