Tach cable through grommet?

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Jul 6, 2011 | 12:15 AM

CA-Legal-Vette

Thread Starter

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From: Scottsdale Arizona

Tach cable through grommet?

Finally have my tach drive distributor in. I have a nice, NOS GM tach cable. A nice grommet for the firewall. I'm so close that I can see those RPMs now! Only problem: how on earth do you get the tach fitting through the grommet? I tried warming it in hot water.

Do you just put a slit in the side of the grommet to the hole?

I'm kind of dreading even looking at the AIM to see what the other three holes are for.

Last edited by CA-Legal-Vette; Jul 6, 2011 at 12:24 AM.

Jul 6, 2011 | 12:35 AM

rcread

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From: Duvall, WA

Quote:

Originally Posted by CA-Legal-Vette

Do you just put a slit in the side of the grommet to the hole?

This.

Jul 6, 2011 | 03:21 PM

Roco71

Melting Slicks

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From: Vero Beach FL

There are 4 holes on the gromment for my 71 I cut one of the center dividers and a little soap/water

Jul 6, 2011 | 03:43 PM

CA-Legal-Vette

Thread Starter

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From: Scottsdale Arizona

Quote:

Originally Posted by Roco71

There are 4 holes on the gromment for my 71 I cut one of the center dividers and a little soap/water

Thanks Roco, 4 holes in mine too. One is for the tach cable and one for the oil pressure line. What are the other 2 for? Also, the oil pressure line is much smaller than the hole in the grommet. Did you do anything to fill it?

Jul 6, 2011 | 03:58 PM

CA-Legal-Vette

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From: Scottsdale Arizona

Quote:

Originally Posted by CA-Legal-Vette

One is for the tach cable and one for the oil pressure line. What are the other 2 for?

Answered one of the questions:

"Also carries oil pressure line, back-up switch wires, PW & auto trans wiring."

Jul 6, 2011 | 04:03 PM

Roco71

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Joined: Jul 2009

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From: Vero Beach FL

Quote:

Originally Posted by CA-Legal-Vette

Answered one of the questions:

"Also carries oil pressure line, back-up switch wires, PW & auto trans wiring."

You are correct

Jul 6, 2011 | 04:08 PM

Roco71

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Joined: Jul 2009

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From: Vero Beach FL

Quote:

Originally Posted by CA-Legal-Vette

You can use 3m strip caulk often called "dum dum" tape to seal up the gaps.

Jul 6, 2011 | 04:27 PM

CA-Legal-Vette

Thread Starter

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From: Scottsdale Arizona

Quote:

Originally Posted by Roco71

You can use 3m strip caulk often called "dum dum" tape to seal up the gaps.

I've seen this stuff (or similar) sold by Eastwood. Interesting idea.

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Jul 6, 2011 | 04:30 PM

TimAT

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From: Gladstone MO

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Quote:

Originally Posted by CA-Legal-Vette

I've seen this stuff (or similar) sold by Eastwood. Interesting idea.

You can get a box at the auto paint store for way less $ than Eastwood will want for it too.

Jul 6, 2011 | 04:58 PM

#10

Roco71

Melting Slicks

Joined: Jul 2009

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From: Vero Beach FL

Some Napa stores carry it. Lots of automotive uses for it. Just a small amount stuffed in the hole.

Jul 7, 2011 | 01:56 AM

#11

shrekviper

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From: Utah

I cut the edge of my grommet to get my tach cable in. If I were to do it again, I'd probably cut the web in between two holes to make it work and look better.

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