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71 Charger tach wiring

Posted By: 2JcodeChargers

71 Charger tach wiring - 12/30/13 04:54 AM

Can anyone post a picture showing the tach wire coming through the firewall on a 71 Charger? I'm adding a tach during the resto and it's a car I did not take apart so I want to make sure I run the wire correctly.
Thanks
Posted By: 71birdJ68

Re: 71 Charger tach wiring - 12/31/13 02:20 AM

Do you have a service manual? The tach wire from what I can tell comes off of block 20 of the bulkhead connector, then goes to the tach as a separate wire. There is a yellow acc feed wire that leads from the tach.
Posted By: 2JcodeChargers

Re: 71 Charger tach wiring - 01/01/14 05:50 AM

No, I do not have a 71 service manual. On the 70 and older cars there is a 1/2" dia. hole in the fire wall that the tach harness goes through. I am assuming a 71 is similiar. I want to make sure I drill the hole properly.
Posted By: MarkMcDonald

Re: 71 Charger tach wiring - 01/01/14 04:18 PM

No hole in the firewall. Goes thru the bulkhead !
Posted By: 71birdJ68

Re: 71 Charger tach wiring - 01/01/14 06:44 PM

Let me try to get a picture of mine. You need a manual to do this stuff. The tach was an option,and as such was added on with separate wires that weren't in a bundle.Like I said, they just plugged it to block 20. Give me a day, and I will get a picture.
Posted By: RSNOMO

Re: 71 Charger tach wiring - 01/01/14 07:31 PM

Quote:

No hole in the firewall. Goes thru the bulkhead !




Yes...

Get yourself a Service Manual...
Posted By: 71birdJ68

Re: 71 Charger tach wiring - 01/01/14 11:37 PM

Sorry, but after looking at mine, I would have to take the fuse block apart to show the bulkhead connector. Go over to the Road Runner Nest forum, and see if anybody has theirs apart.
Posted By: 2JcodeChargers

Re: 71 Charger tach wiring - 01/02/14 04:48 AM

No worries. Since it feeds through the block I will get a schematic and route it properly. I am getting close to getting the engine compartment painted and I wanted to drill any needed holes before paint. It sounds like I don't have to worry about any extra holes.
Thanks for the info.
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