Underdash Wiring Harness

[bobslsc 10]

Are all 1970 Mustang wiring harnesses the same with just different plugs that are either used or unused? Is there a different one for Mach 1's as opposed to a '70 coupe? Any insight would be helpful.

[bnickel 10,004]

there are different versions for tach, air and any combination thereof. so there would be 4 or 5 total variations.

 

without air or tach.

without air but with tach

without tach but with air

with air and tach

 

pretty much everything else is included in any variation of the harness, like underdash courtesy lights, door lights, clock, etc. by using the specific add-on harness for each accessory.