2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Engine wire harness routing

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Old Jun 28, 2015 | 05:50 PM
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kenneth_ugalde's Avatar
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Exclamation Engine wire harness routing

Hi,

I took out the engine wire harness from my FC and now I canīt remember how it was routed from the firewall gromet to the strut tower and from there.
Could some one with those wires routed the original way please take a few pictures to guide me?

The attached pictures are of the area I need pictures of.

Thanks.
Attached Thumbnails Engine wire harness routing-img_3883.jpg   Engine wire harness routing-img_3884.jpg   Engine wire harness routing-img_3885.jpg   Engine wire harness routing-img_3886.jpg  
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Old Jun 28, 2015 | 06:58 PM
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From: https://www2.mazda.com/en/100th/
the first pic is correct, and then it goes under the brake line, gets ziptied to the heater hose, and then UP through the bracket in pic 3, and then some goes to the boost sensor/afm, and the rest hangs a right to the engine. there is a clip on the thermostat housing for the harness.

i usually find it easier to put the harness on the engine, and go to the ecu, but it should work the other way
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Old Jun 28, 2015 | 07:08 PM
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Well, I remember where it goes. I just want to route it the way it came from factory.

A good picture would be great help.
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Old Jun 28, 2015 | 07:49 PM
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he explained plainly how it is suppose to be routed, you see the brake line that the harness is pointing to where it is zip tied to the fender? it goes under that brake line, straight to the metal heater tube that is bolted to the frame rail and zip tied to it while running forward it then comes straight up the RF strut tower and is mounted on 2 brackets there where it then jumps over to meet the backside of the thermostat housing.

the rubber grommet is held in place by that bracket in the last picture.
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Old Jun 28, 2015 | 08:43 PM
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Thanks Mates.
Anyone with the pictures requested???
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Old Jun 28, 2015 | 09:19 PM
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not on hand sorry, my stock harness is long gone. if i could find my camera ever i probably got one on there somewhere.
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