My right rear door courtesy light has two wires- a solid red and a black w/ white stripe. What puzzles me is that both wires have voltage across them when the key is turned to the left or right. To me the red is the feed and black would go to the door jamb switch. I currently do not have a bulb in the socket- there never was one in place. None of the courtesy lights in the door pull handles worked in any of the doors when I bought it. I got the right front fixed after splicing the red and blk w/white wires which were severed in the door jamb. The right front now comes on when I open either of the front doors, telling me the front door jamb switches are good. I still have to splice those two wires in the left front door jamb which are severed, but not shorted. I have a '63 Sedan DeVille, 6339. The schematics in the manual are somewhat helpful, but the color coding doesn't match with what I have( pages 12-93, 16-104, 16-118 ). I should state that my wiring is still encased in the cloth tape so I know it's stock, also, the wires are not damaged in the rear right door jamb.Why do I have power (12V) on BOTH the red and black? I'm not putting a bulb in there until I fix it right. This is driving me up the wall.

Views: 185

Reply to This

Replies to This Discussion

Robert- thanks- I will be sure to check in that location.

Andy, everything you need to know is already at hand.  If you ground the black wire with a bulb in place, the bulb lights.  So you have no ground at the jamb switches or the seat switch.  You should start by repairing what you know is broken (seat switch and left front door), and then check out your jamb switches on the back doors. Jason already made a nice video about here:

JASON'S DOOR JAMB VIDEO

On most Cadillacs of the Sixties, the grounds would be spliced at the door jamb switches.  You should take one out and test for continuity between there and the black wire.  If there isn't any, you know you have a broken wire, start digging.  If everything lights up when you ground the wires to the switch, then you're done, clean or replace the switch.  

Thanks Mark- already started doing just that and I'll deal with the other issue later. Just for the heck of it, I checked the rear left side for comparison. It's bulb was good,yet wouldn't illuminate. When I took the bulb out, so as to see what I had for voltage it checked out good- only on one side of the bulb socket. Here's the kicker... while the bulb was pulled out on the left rear, I checked the right rear- the voltage on the black/white wire was gone. So when the left rear bulb is in place, that's when 12V will show up on the blk/white wire on the right rear bulb holder. This is gonna be a fun fix. And thanks for the heads up on the video.

The voltage you see on the ground side when the circuit isn't on is normal; the voltage on the right side is "leeching" through the filament of the bulb on the left side, because they are all connected.  This is very good news, it means there is an unbroken circuit on the ground side, and all you need to fix is the final ground points.  Getting there.  If you install the bulb on either side and ground the black wire on the other side do they light up? 

Thanks for everyone’s input. It all helped. My problem ended up being caused by a loss of ground on both rear door jamb switches. The car had seen a lot of gravel roads prior to my purchase and acquired road dust in the switches and within the doors themselves. Cleaned the switches with brake cleaner followed with electronic spray. They work fine now. Am including pics of the rats nest of broken wires found in the front door jamb. Someone had tried fixing the electric seat wiring, but the broken window wires were still encased in the cloth tape. 

Congratulations-

RSS

Photos

  • Add Photos
  • View All

Forum

1964 Interior AC/Heater Box Removal

Started by Travis in Restoration Discussion. Last reply by Travis 15 minutes ago. 4 Replies

Newby question here!  I've read through the shop manual and as many threads as I could find on here, but I'm still stumped on exactly how to remove the interior plastic Heater/AC box from my 64 SDV…Continue

Tags: vacuum, mode, door, box, a/c

Burning Rubber

Started by Kim K Kaiser in 1963/64 Cadillac Specific Discussion 24 minutes ago. 0 Replies

Out of curiosity,, is the 63 64 engine capable of burning rubber off of a stop light?   Not a hold the brake and rev up and release, but from a stop, to burn rubber power?I know mine wont because i…Continue

Ordering Polyurethane Replacement Trailing Arm Bushings

Started by Dan McNarry in 1963/64 Cadillac Specific Discussion. Last reply by Russ Austin 8 hours ago. 2 Replies

There seems to be growing interest in the poly bushings. In order for me to keep track of who wants bushings, please send me a message along with or in lieu of a reply to either this thread or the…Continue

bucket seat covers

Started by Joseph Pagliuca in Wanted to Buy. Last reply by Bobby Brown 10 hours ago. 3 Replies

looking for leather seat covers for bucket seats In a 1964 Cadillac Eldorado convertibleContinue

Blog Posts

How to sensibly deal with the Corona Virus

Posted by Jeff Kinzler on March 14, 2020 at 5:02pm 6 Comments

https://theamericanscholar.org/covid-19-a-primer/

I found this very helpful, written by a knowledgeable authority in public health. 

Remember, Viruses are not spread by Cadillacs so get out and drive!


Safe & Healthy travels. 

Jeff Kinzler

1963 Eldorado convertible boot

Posted by Les Eastling on February 27, 2020 at 10:33am 1 Comment

I need a used convertible boot for a 63 Cadillac convertible - condition or color is not an issue since it will be used as a pattern for making a new one. One from either a 62 series convertible or an Eldorado would work. I know I am searching for hen's teeth here... but you never know unless you ask!

Looking for 63 Convertible / Coupe rear side trim

Posted by Gene McIlroy on January 24, 2020 at 12:18pm 0 Comments

Want to find a good straight dent free rear side trim for my 1963 Convertible.  I have both sides but they do not match.  Wanting to get them to match.  I am attaching a photo of the two trim sided that I have really wanting the squared off trim if I can get it.  Let's see what you have,…

Continue

Videos

  • Add Videos
  • View All

© 2020   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service