1971 Dash Harness... - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

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post #1 of 6 (permalink) Old May 14th, 18, 10:20 PM Thread Starter
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1971 Dash Harness...

Somewhere in the future, I am going to have to replace the dash harness in my 71. The fuse block is hanging loose - the only attachment point that may still work is the lower left screw, but it will not stay in the hole (I have tried to use a 'punch' to rework the hole, but it did not work).

So, I have been looking at different harnesses. American Autowire has one, but I believe that all of their harnesses use the newer ATO style fuses. Lectric Limited has an exact reproduction harness for the same price (glass fuses).

Has anyone here installed either of these?? If so, how much time should I allot for changing it out?? I have no problems with residential/commercial wiring, but automotive wiring has never been my thing. Both harnesses should plug directly in to everything else and the bulkhead should also work.

If anyone can give me some guidance on this, your input will be greatly appreciated. Thanks in advance.

1971 Malibu, factory buckets/full gauges/console, 377 roller cammed small block, Turbo 400, 3.42 10 bolt posi (Buick), - All your base are belong to us.

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post #2 of 6 (permalink) Old May 14th, 18, 11:11 PM
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Re: 1971 Dash Harness...

You'll need to remove the dashboard from the car. Here are the steps: https://www.chevelles.com/forums/26-i...step-step.html

Where there are screws that screw into the plastic of the dash face, you'll find the plastic threads will pull out very easily. You'll think the screw is getting tight but then it'll keep turning.

Grounds are important. Any dash brackets where ground lugs are to go on need to be cleaned up shiny with a wire brush. I suggest you get some of those star-toothed grounding washers to help get a good ground.

The entire load of the windshield wiper motor and washer get it's ground through the dash wiper switch body. Make sure it's well grounded.

Get all new cluster bulbs, test them before installing. Check the ones in the AC/heater control.

Consider a new headlight switch. The dimmer rheostats can get iffy over the years.

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post #3 of 6 (permalink) Old May 14th, 18, 11:17 PM
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Re: 1971 Dash Harness...

JMHO, I would go with the ATO fuse setup!
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post #4 of 6 (permalink) Old May 14th, 18, 11:35 PM
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Re: 1971 Dash Harness...

Oh yeah, while you're in there, you'll probably find all the foam seals in the AC/heater ducting has evaporated. You'll spend time trying fixing them up.

If your car has AC, make sure the passenger lap vent that's attached to the dash under the glove box is attached to the bottom of the dash before you re-install the dash. It's a huge pain to install afterwards.

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post #5 of 6 (permalink) Old May 14th, 18, 11:54 PM Thread Starter
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Re: 1971 Dash Harness...

I appreciate the info, but I really need to know how much time to allot for the installation. This is my daily driver and I can't have it down longer than necessary.

1971 Malibu, factory buckets/full gauges/console, 377 roller cammed small block, Turbo 400, 3.42 10 bolt posi (Buick), - All your base are belong to us.

My Chevelle w/ open headers: http://www.youtube.com/watch?v=Q61TTYXmIsc

My Chevelle w/ 2.5 pipes + X crossover/18 inch glass packs:
http://www.youtube.com/watch?v=YFm_ISn_UDA
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post #6 of 6 (permalink) Old May 15th, 18, 12:20 AM
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Re: 1971 Dash Harness...

I'd say at least a day. Figure more for surprises.

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