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11-01-2014, 01:15 PM
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#1 |
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Registered User
 Join Date: Jan 2012
Location: corunna michigan
Posts: 1,999
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Factory tach harness firewall location
Anyone know the CORRECT location for routing factory tach harness through firewall on 1981
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 1970 CST 4x4 collecting nos parts for this project1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles |
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11-01-2014, 01:22 PM
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#2 |
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Registered User
Join Date: Nov 2008
Location: Anchorage Alaska
Posts: 412
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Re: Factory tach harness firewall location
Should be on the left side of FW through the rubber plug area, also them 1980/81 style tach with the newer font, has always been a rare find for me, i have installed many in the 83-86 style truck, they look great usually found most of them in the 80 models (a few in 81's), with the birth of the font change.
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70 SS 454 Monte 69 355 C-10 Shortbed 90 454 Crew dually 4x 76 454 Dually 2x 75 454 K5 77 468 Kona |
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11-03-2014, 10:15 AM
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#3 |
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Registered User
Join Date: Jan 2012
Location: corunna michigan
Posts: 1,999
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Re: Factory tach harness firewall location
Thanks for the reply the cluster I have has a factory harness with a rubber boot/grommet looks to require about a 3/4 inch hole.
__________________
1970 CST 4x4 collecting nos parts for this project1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles |
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