Hi everyone

I need to repair my electrical harness. The car starts and drives, but there are some problems.
Can you tell me in the engine bay what the 3 items in the photo correspond to on the diagram? and what are they for?

A previous owner fix on the ground wire from the ignition key to the 3, a "hiden switch" under the dash. Kind of immobilizer i guess. The "hiden switch" does not work....



I have the original repair manual with the diagram but I can't find what it corresponds to.

PS: 4 is a fuse?

thks

 

Item 3 is the power junction block.
Item 2 is the horn relay
Item 1 is an electrical connector of some type, but we need a better picture that shows the wire colors.

Item 4 is not factory, so I have no idea what it is. It is not a fuse, since the current draw from the starter is far greater than any automotive fuse could protect against.

 

Noise filter/suppressor?

 

Item #3 is the horn relay and power distribution stud.
Have no idea what #'s 1 and 2 are.
Item #4 ferrite core? Fusible link?

 

Number 1 is the connector going to the starter for the starter solenoid wire (purple) and the wire providing 12 volts to the ignition coil while cranking (yellow).

 

If it was a fusible link the fusible link would be the wire itself (yellow bracket), Item #4 (itself) would be a splice.

 

No GM ever made had a fusible link in the primary battery cable to the starter. Again, that is not a factory cable. There is no way to know what that plastic cylinder is. The cables on either side of it appear to be two different sizes (and yeah, that could just be a photo artifact and not reality), which suggests it might be a splice of some type?

 

Sorry, but you're incorrect. You can remove the cable (or not), cut out that black "thing" & open it up.

 

The words "... from this photo..." were implied

 

ok

 

What does CHC stand for? Cutlass High Compression?

 

It looks like you have some extra stuff there also.
not sure if 2 is the horn relay
here is what it should look like. (except for all the dust).

 

This is item #3, the horn relay on the op's car.

 

I tend to agree w/ you. I suspected this the other day; so, I zoomed in on it (again).

YELLOW ARROW - I don't believe this is the horn relay. If it is a horn relay, it's doubtful it's either the original OEM horn relay or an equivalent relay. My suspicion is it is associated with whatever the "thing" is in which the OP references:

GREEN ARROW - It is actually a protective rubber or plastic "cap" which is placed on top of the junction/distribution block threaded bolt of the horn relay/distribution block assembly to protect the wires from possibilities of shorting.
RED ARROW - This may be the horn relay or the resemblance to some aftermarket horn relay. It's orientation to the original OEM horn relay/distribution/junction block is suspect.

The OP needs to provide a much more meaningful photo or photos. As Joe implied "from this photo" it's difficult to ascertain any degree of certainty what's happening. I agree I think there's extra "stuff". Not the least of which I suspect is related to some unbeknown hidden switch which doesn't work. Which almost leads me to suspect Item #4 is a noise filter (what Eric references as a ferrite core - same thing). Sometimes they're called a choke filter - since they're designed to choke high frequency from the line they're attached to.

This is like shooting craps - unless the OP provides additional input.

 

I'm not 100% clear on what you're saying. I realize French is most likely your primary language. But, I guarantee it is not a ground wire from the ignition key to Item #3 because Item #3 contains only positive (+) power wires and no negative (-) ground wires.

 

In reference to posts 4 and 5 that plastic thing does look like a ferrite core but why? Most of the noise on an older AM radio was from ignition and as noted in other posts on this site from road noise at the wheels (remember that post?).

 

Cutlass Holiday Coupe

 

Hi everybody

I couldn't hope that much help from all of you, thanks.
But i do apologize, i took the wrong pic.
I thought all the cutlass 65 engine bays look the same, but seems not. the one with red fender is from internet,
Here my engine bay (bue fender), i recognize the horn relay and the power block but i don't know what this part is done for (red circle)
On the electric map 13-1 from the manual, it seems to be a relay too, do you agree?

 

Holy Guacamole! This thread has taken big left turn. I cannot identify that item circled in red. I suspect it has nothing to do with a 1965 Cutlass Holiday Coupe and is (instead) most likely a 3rd-party aftermarket device.

 

The circled item is not an Oldsmobile part. Neither are the two relays attached to the inside of the fender in that photo. Other things to note in that photo are the woefully undersized battery cables, aftermarket battery terminal clamps, and aftermarket battery tie-down. I also have no idea what the yellow cable/hose is supposed to do.

 

 

this is a pic from under THE unknow piece...any ideas?

 

Not a clue. It is obviously some sort of relay, as you can see the coil and contacts. Without tracing the wires there is no way to know what it does.

 

That is a monster relay. I have absolutely no idea what it is for. I did read further back in your threads/posts after you initially joined this site seeking possible clues. Is this device associated with what you are calling an air lifter?

Post URL >>>1

 

Ah buggers. You stated an air filter. Crud. Early morning for me. Sorry about that!

Yet, that's still a monster relay.

 

Yesterday, my eletric car friend came to my house and told me its a relay, probably fixed when the car was sold new in paris in 65.

He told me too, when he looked under the dash board .....to buy a whole wiring harness. Wich one can you suggest me?

 

I do not agree with the suggestion to buy a whole wiring harness simply because you don't know what the relay connects to. Without further information regarding what are these problems it's impossible to suggest possible areas to evaluate. First, identify the purpose of the relay by tracing the wires from beginning to end. Your first post stated: "The car starts and drives, but there are some problems". What you do know is that relay is not 1965 GM Oldsmobile Holiday Coupe OEM equipment - it is an aftermarket relay. Whether that relay has any relation to your yet unidentified issues is a complete guess. Read Post #20 and Post #23 again. It would be extremely unlikely that relay was installed when the car was new in 1965. That relay was most likely installed by a previous owner during the past 59 years.

There is no way to determine the function of that relay &/or the yellow aftermarket relays on the inside of the front fender without tracing the wires for each. That should be your first order of business.

I have absolutely no idea whether that large relay is associated with the yellow wires. Again, the yellow wires and smaller relays on inside of front fender are NOT original equipment. Trace the wires & find out what they connect to.

We have no information to go on other than one picture. My strongest suspicion is a previous owner installed those yellow wire relays to increase brightness of the headlamps. This was not an uncommon practice as the installation of headlamp relays doubled the brightness of the headlamps. This may have been the result of the car failing an inspection because the headlamps were too dim (not compliant with lumens of brightness).

Start tracing wires first.

 

Did the car possibly have a big stereo system in it?
I've seen this kind of cobbery before.

My advice, get a copy of a stock wiring diagram and return it to stock.