Cleaning up rats nest of wiring

[rhariz21]

Hey guys,

Firstly, a side note: i love how helpful this community is!! best experience I've had/seen with a forum 

 

Working on cleaning up the nightmare of wiring the previous owner did on my 1974 02. It has random wires everywhere! I'm trying to track down a mysterious aftermarket switch that doesn't seem to do anything.

First question is, can someone help identify what these relays are for from left to right in the first attached picture?

 

The Second picture is the third relay where the switch is connected.

A blue wire is pulled from the second relay, red to battery, black not connected to anything (guessing the ground fell off), Yellow to this switch. At the switch, there is the yellow and a green wire. green wire  splices into a wire into the ignition if i remember right it was purple. then goes to some box into a mess of other wires again. I want to say it was for the head unit (which was missing when purchased). This car had 2 amps, bunch of speakers, 2 subs, dvd player, and a bunch of random useless stuff so there are wires and grounds  EVERYWHERE!

 

That was a lot of info. I primarily want to know what those relays are and that blue wire from the 2nd relay so i can determine whether to pull all the wiring and that switch off the car.

 

Thanks in advance!

 

 

 

[Healey3000]

I just finished a lot of cleanup myself.  Still have to remove the seat belt wiring.

 

Those relays are the horn, low beam and high beam but I don't know which is which.  I think these are numbered 10, 11 and 90 in the wiring diagram.

[Simeon]

The one you are holding is aftermarket. Slow tedious job but just start tracing the wires back to where they are terminated and remove. 

 

No secret other than being methodical. 

[rhariz21]

2 minutes ago, Simeon said:

The one you are holding is aftermarket. Slow tedious job but just start tracing the wires back to where they are terminated and remove. 

 

No secret other than being methodical. 

Any idea what that blue wire is from the Second relay?

 

[Healey3000]

Do you have a wiring diagram?  It is absolutely indispensable if you are getting into the wiring.  PDF's exist.  I have one for a '75 and it seems to be correct for my '74.

 

Something to be aware of is that these wires do fade over time into some pretty interesting colors.  Green often turns blue so you have to locate the actual conductor and trace back.

 

Here's a snapshot of the region of interest.

Edited December 7, 2016 by Healey3000

[Simeon]

Have you got any wiring diagrams?

 

http://www.2002tii.org/kb/246

 

That's not going to be factory wiring in that location (ie a solid blue wire). Note the colour combinations on the wiring diagram. Not many solid colours used. 

[rhariz21]

I dont have a wiring diagram. I will take a look at those. the 2002tii.org seems to jump form 71 to 75. unless "71-" is meant to be 71-74...

 

Any reviews on this ...https://www.amazon.com/1974-1976-2002tii-Color-Wiring-Diagram/dp/B003BDPWJ2

[rhariz21]

**double post**

Edited December 7, 2016 by rhariz21
double

[Healey3000]

I've been using the '75 diagram.  It appears to be correct for the '74 (so far, at least).

[Simeon]

It refers to the Model 71 and not specifically the build year.

 

Check the terminology used to describe the various specifications.