Ok my Cutlass friends. I've been completely going over my 69 olds Cutlass Supreme. I was so diligent on tagging and bagging everything. I have 45 bags with 1-7 screws, nuts and bolts.
Here's my issue. I pulled the motor, converted drum to disc brakes. Sand blasted everything, powered coated and painted everything. As I am re wiring the engine, I realized I did not mark all the wires. I am re wiring olds cracked wires, re wrapping, all of them. I freaking forgot where everything goes. I have a copy of a shop manual I bought from OPGI, but it sucks. It's so faded I can't follow anything.

Does anyone have a clean wiring diagram for under the hood?

It would be so appreciated.

Here a couple of shots from under the hood.

 

If your '68 assembly manual (really called the product information manual, or PIM) is one of those from Millenium Industries, the copy quality is very poor, to say the least. I recommend that you join www.wildaboutcars.com. There is a nominal annual dues you have to pay but it's worth it just to access the information they have on Oldsmobiles. One of the things you can access and download for free (once you join) is the '68 PIM and the copy quality on it is outstanding. As well, it contains several extra pages that are not included in the Millenium Industries version. I found out a lot of things about my '68 from the Wild About Cars version that I just could not see (because of poor copy quality) in the MI version.


Randy C.

 

• Battery: 2 unique wires
• Alternator:
  • 1 large red wire with ring terminal
  • 1 unique 2-wire plug (Blue and Black/White)
• Regulator: Unique plug
• Starter:
  • 1 unique wire,
  • Yellow wire to R terminal,
  • Purple wire to S terminal.
• Horn Relay:
  • Black / Green wire to horns,
  • Pink / Black wire to ignition key-in switch,
  • Black wire to horn button.
• Coil:
  • (+) Terminal - Yellow wire to starter R terminal,
  • Cloth wire to ignition.
  • (-) Terminal - Black wire to points.
• Oil Pressure Sender: Blue / White stripe.
• Temperature Sender: Medium Green.
• Brake Differential Pressure Switch: Pink (or Pink / White).
• TH400 Kickdown: Black / Orange.
• W/S Wiper Motor: Unique plug.
• W/S Washer Pump: Unique Plug.
• Spark plugs and Distributor: Spark plug wires to fit.

That about covers it.

- Eric

 

That's the info I was looking for. It's only the starter, distib. The alt and all the light are good.
Thank you.

 

You're welcome.

 

Nice job Eric, a sticky perhaps.