Caterham Ignition Switch- stupid mistake department

[Jesse D]

Note to self- do not work on your car when you are tired/sick.

 

I decided last weekend to replace one of the scuttle grommets on my 1994 Caterham as the old one was frayed. The items running through this grommet (just above the steering column) are the speedo cable, the windshield washer tube, and the wiring for the aftermarket radar detector installed by a previous owner of my car. In the course of unplugging various things to replace the grommet I somehow pulled three of the four wires off the back of my ignition switch without realizing I was doing so, so I have no idea which wire goes where. Sigh. See note to self. My electrical knowledge is very limited, meaning a voltmeter can be a dangerous tool for me. I'm hoping that one of the knowledgeable folks here can set me right after having a chuckle at my expense.

 

Attached is a diagram of the back of my Lowe and Fletcher ignition switch.

The upper right has two mounts with 15 as a label. These two mounts are close enough together that it appears one of the ganged wires below could fit over both mounts, but that is not the case- only one of the ganged female mounts will fit over a prong on the switch.

The lower right has a single prong labeled 30

The lower left has a single prong labeled 50

The upper left has a single prong labeled P and R

 

Playing with a voltmeter as a continuity tester and the ignition switch shows that the lower right prong labeled 30 makes a connection to both the upper left and the upper right prongs when the key is turned to the first position and makes a connection to the lower left prong labeled 50 when the key is turned to ignition. The other prongs have no connections to each other.

 

The wire that didn't come off was attached to the upper left (marked P and R) and is a fused power wire that I'm pretty sure goes to the radar detector. The other wires available that pulled off are

* Two brown wires with female mounts that are ganged together with a bridge. These wires have 12 volts running through them.

* Two white wires with female mounts that are ganged together with a bridge. No current running through them.

* a single white wire with a red stripe that has an appropriate female connector. No current running through it.

These wires run right into a taped harness so no way to trace them by hand. I do see a white wire with a red stripe coming off the solenoid attached to the starter motor

 

Based on all this my best guess it that the two brown wires should go to the lower right prong labeled 30 as the source of power and the other wires should go to upper right and lower left. I assume one of these wires provides power to everything, and I'm guessing that is the two ganged white wires and they go to the upper right and that the single white with red wire is the starter wire and should go to the lower left prong, but I very much want to do this correctly the first time and not turn a simple problem into a more complicated one- everything was working fine before the wires came off:-)

 

Can anyone here save me from my carelessness. Thanks in advance.

 

Caterham Ignition.PDF

[Jesse D]

 

Sorry, uploaded my drawing as a pdf by mistake- here is a jpg.

[coffee break]

For what it's worth.

caterham wiring diagram[1].pdf

I hope you can download and open.

Good luck

[Zona]

I totally agreed with you, if this really worthy or not? You have spend so much money and time on this project.

[Jesse D]

My best guess turned out to be correct and everything works properly when I wired it up, so problem solved.