C2 original harness ties, "P" and "Rx" ?

[Joe R.]

Hello All:

I have been collecting and researching examples of original C2 firewall harness ties, and I have encountered two different versions that I believe are both original. My guess is that GM had two suppliers for these, but I would like to get some feedback from other members of this board.

The photo attached to this post shows the front side of the two versions. One type has the letter "P" followed by a number that varies, which is presumably a mold number or something. The other type has an "Rx" logo with a number that varies, again presumably a mold number.

The following URL takes you to a photo of the back side of these same wire ties. The P-type tie on the left has smooth ears on the back, while the Rx-type on the right have two circular indentations.


I note that both the P-type and the Rx-type are somewhat softer than the reproduction ties, although the P-type seem to be the softest. My questions are as follows:

1) Are both of these styles correct for C2s?

2) Is there any evidence that one of these styles was used in "early" C2s and the other in "late" C2s? My car is a 67, so I would like to use the correct versions if in fact it makes a difference.

Thanks in advance for any insight you can provide.

[Alan Drake]

Re: C2 original harness ties, "P" and "Rx" ?

Hi Joe,
Comments from a Mar64 car - disclaim anything else. (need to put in small print)

Have two ties off the car at prresent, one still on car that I can not look at.

First these are clear, well a light tan/yellow color due to age I would think. One is marked "8" the other "10" both just below the wide area. No markings of any other number or letters. Some circular mould marks are visible at end (the hole and point). Another mould circle on other side from number, large circular mark where the strap goes back into the rectangler hole with a smaller circle inside that circle.

The large flat area with the rectanglar is solid, repro has two small holes there.

The originals measure .381 while the repro measure .375. Now the difference is minor, however one can see the difference. The hole on pointed end is also larger on original than repro (can measure if you want)

Have fun
Alan

[Joe R.]

Re: C2 original harness ties, "P" and "Rx" ?

Thanks Alan. I forgot to mention that the ties I have are black, which I think was used from 1965 to 1967. It sounds like yours are similar, though.

One thing you mentioned was the that on the back of the head, there is a large mold circle with a smaller one inside it. This characteristic was pointed out to me by a fellow NCRS member as being one thing that originals have that the repros do not. Both my P-type and Rx-type ties have this feature, which can be seen in the photo I posted.

[Alan Drake]

Re: C2 original harness ties, "P" and "Rx" ?

Did pull your photos off and looked at them through my photo software and saw the circles. Mine, although different color, look like the picture on the left, two circles & no holes.

[Alan Drake]

One on Car is "8" also *NM*

[Wayne M.]

Late '65 has (only) 3 Rx's ....

... all different (mold ?) #s.

Checked in a box of T-straps I've had for at least 15 years, and 3 are the P type (both my Rx and P straps are as you show in your 2 photos). The P's are 5" long.

But there's another 2 straps from my box that are 7" long, and they only have a number (one 2, the other 20). Can't remember where I got these loose straps.