71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

[Grant W.]

Hello C3 Wire harness Guru's
I have a 71 454 Mid February production car, no AC car automatic only options rear defroster pw,ps, 15 years in restoration and continuing!!!

The car had a replacement wiper motor that I tossed 15 years ago. Recently bought a restored wiper motor and installed a 3 port pump and I bought a replacement front wire harness years and years ago supposively for non AC car automatic

Picture 1 is the extra wire with clip and I have no idea where it goes. Could this be for an AC car and if so should I just wrap it up and tuck it under the wire harness

Picture 2 is the black wire that also comes out of the wire harness. it has a looped end attachment and no way will it fit the supposedly ground clip on the wiper motor. I added this L shape clip thinking it should be there like my 68 and 69 wiper motor. I could be wrong so should I take off this clip and add it my for sale bin.

Picture 3 is this long wire harness that floats towards the passenger side. I some what saw in an assembly manual what it was for so I just routed it towards the passenger side. Now I can't figure out where it goes.

Picture 4. I was just reading on the discussion board - Jack Humphrey replied to a post-- If the black wire exits the firewall harness in the 'Y' area (around/below the WSW motor), my guess is it's the discrete ground for the '71-only CEC control relays that mount on a L-bracket extending from the driver side, upper, firewall. Without a ground reference (L-bracket mounts to non-conductive fiberglass), the CEC system is 'helpless' in terms of operability....

So should I mount the black wire right behind the bolt.

I appreciate all you help in advance. After 15 or 18 years its coming along.....was off work on Covid for 5 months so I finally got a lot of work done on the car....but now back to work again

Thanks for your help in advance

Grant

Update
I just found out that long wire with double clips goes to the drivers side of the solinoid end. I just installed. two more things to figure out.

Update 2
found out the black wire with clip goes to the L shaped clip on the wiper motor for ground
The wiper motor with the red wire is clipped on with another red wire with black clip. It was hidden behind all the wire harness.

So I just have to figure out what picture one is where that clip goes to.

[Owen L.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Not exactly sure on this, but I suspect the main harness is the same whether A/C or not. The A/C harness is separate and connects to the main. Regardless, here is a Lectric Limited diagram I received with my '72 main harness (454 auto with A/C). It may help you figure out your puzzlements.
72_engine_harness_9d6d78dc***95662739c21ff3f9c9fb87569f5f6.jpg

[Grant W.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Thanks Owen
I looked at the pic you sent me and that long wire that I thought in picture 3 goes to a solinoid on a small block as per AIM but then I looked at my Solinoid and that is where the wire goes to as it travels along the valve cover and goes under the engine lift and snaps into the Solinoid.
Thanks for your help

Now I have to track the other dual pin connector and find out if there is supposed to be a plug that goes into the L clip of the wiper motor.


Grant

[James G.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Grant,
Yesterday I just inspected an unrestored 71 - early march car - which has a 5 port washer pump with the jumper across the headlamp ports... also has the cut off washer hoses at the rad support.
FWIW I had points deducted at the regionals for the turn down ports on my late 71 3 port pump, I subsequently changed out to the straight ports and received zero deduct at the nationals.

[Grant W.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Grant,
Yesterday I just inspected an unrestored 71 - early march car - which has a 5 port washer pump with the jumper across the headlamp ports... also has the cut off washer hoses at the rad support.
FWIW I had points deducted at the regionals for the turn down ports on my late 71 3 port pump, I subsequently changed out to the straight ports and received zero deduct at the nationals.

Hi James
I appreciate your help. I had thought it would be a 5 port, a friends car was judged at a chapter meet two years ago but I don't think he got a deduct
Can you possibly send me a pic of your 5 port set up. I just need to know where the water hoses go to.
If I recall two of the ports are left unplugged?? or were they plugged

You can send me a pic when you can to
grantwong@telus.net

One less thing to complete and have it done right

Thanks, grant

[Mark E.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Is the CEC connected? I'm not as familiar with wiring for '71... in 1970 there's a plug on the engine harness for TCS that's similar to photo #1 but with black and purple leads. It plugs into a separate mini-harness for TCS. As you know TCS was replaced with CEC for '71; different design but same idea.

Check the schematic in the CSM. The oOSOEZ diagrams from Dr Rebuild are very handy too.

EDIT: For '70, the plug mentioned above goes straight to the TCS vacuum switch on the intake. The separate TCS harness goes between a temperature sensor in the right cylinder head and a different terminal on the engine harness. You might figure out the CEC circuits for '71.

[Terry M.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Hi James
I appreciate your help. I had thought it would be a 5 port, a friends car was judged at a chapter meet two years ago but I don't think he got a deduct
Can you possibly send me a pic of your 5 port set up. I just need to know where the water hoses go to.
If I recall two of the ports are left unplugged?? or were they plugged

You can send me a pic when you can to
grantwong@telus.net

One less thing to complete and have it done right

Thanks, grant

There is a "jumper" hose (U shaped) between the two unused ports. I don't have a picture in my files to help you Grant.

[Grant W.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Hi Mark
I did find where that long dual plug went to. It goes to the carb solenoid end. Now I have to figure out that short one. Terry McManmon said it may have an additonal jumper wire harness. I will look at the Assembly manual and post what it could be
Thanks for your help
Grant

[Mike E.]

[Grant W.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Hi Mike
I did change as per your comment. So it is all correct now.
I just have to get a picture of what Terry was trying to describe. Working long hours now doesn't give me time as I was off covid for 5 months and from a painted bare car, I basically put all the exterior parts on and worked on the vacuum system and just trying to finish up that extra wire and then finish installing the wiper door and cowel area. If anyone wants a step by step method of installing the wiper assembly and wiper door and grill let me know. Two to three weeks of fighting and taking off the grill 10 times to make things fit. I should be an expert on it now
Thanks for your help
Grant

[Gary C.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Grant,
Look at Fig M 22.6 of 6th Edition 70-72 TIMJG, it shows the 5 port washer pump and how the jumper line goes from one port to the other. The center is feed line from washer tank. With mid-Feb 71 build, (SN 10886 end of month so yours is before this), your washer pump should be the 5 port pump as denoted on Pg 188 of TIMJG. With your car being after SN 3000, it would have the cut headlamp washer hoses as noted in Fig. M 22.7 and the jumper line on the 5 port washer.

Your washer pump base is for a 69 as identified with the two plastic plugs where the 69 version headlamp washer solenoid normally attaches. Thus, the reason you had the three port end.

On the wire ring terminal, look at Fig. M 18.22 for CEC relays, you can see the ground wire ring terminal on inboard side and the way they are installed. This wire ring terminal grounds these relays.

Gary

[Gary C.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Grant,
Also, you wiper door vacuum actuator looks like for late 69 and 70 (straight vacuum pipe on front). 71 & 72 had the pipe bend outwards at right angle (see Fig. M 22.10 of TIMJG).

Since you are expert now for replacing these items, it will come in handy when you find the TFP actuator.

Thanks,
Gary

[Grant W.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Hi Gary
Thanks for pointing out the wiper door. You are correct. Sometimes when you are restoring you Pick up the wrong piece. I do have the correct actuator.
Thanks again.
Grant

[Grant W.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Hi Gary
My serial number is 11481 and it requires the 5 port. It was at a chapter meet a fellow member had a 71 very close to my car but was after 12000 and he had a 3 port. I was comparing pictures and he had a 3 port then thinking mine should be a 3 port too as the wiper motor on my car replacement has a 3 port.
Also the ground wire for Fig. M18.22 for CEC relays has been installed on the relay.

Just have to figure out this weekend what the extra 2 pin wire is for. Will probably find it.
Thanks again for your help
Grant

[Gary C.]

Re: 71 454 automatic No A/C car...Wire harness extra plugs question C3 guru's

Grant,
Is that wire (first picture) the automatic trans kickdown switch wire? See AIM UPC M40, pg A9 view B? It comes from eng wire harness, goes thru firewall grommet and connects onto the kickdown switch by the accel pedal mount.

Thanks,
Gary