Hello,

I was hoping to get some advice from all of the FD experts. Currently, I changed my radiator and reconnected my battery and notice that my cooling fans came on (car has been off for about week). I figured that it was either my rely or my harness shorting. I would like to replace my harness (looks melted) but do I have replace my whole engine harness to do that? It seems that mazda does not sell it seperately. I'm hoping that the harness from the cooling fans to the rely are seperated from the engine harness. I checked the manual and it really didn't specify anything. Any help would be appreciated.


Sincerely

 

this may sound silly, but did you check your fuses, especially Cooling and Meter fuses? Also, are you getting any deflection in your gauges?
To answer your question, you would have to replace the whole front wiring harness, it is a long one, running from the fuse box thru the left quarter panel to front support bar to the right quarter panel to ultimately end at the right firewall

 

If the ground fault is past the relays, it won't affect the fuses. And if the "melting" is on the wiring leading to the radiator fans, no, he most likely won't have to change out the entire front wire harness; there is a connector that separates the radiator fan wiring from the rest of the harness.

 

if there is a short anywhere along the line, it will prevent 12V from the cooling fans. The connectors to the cooling fan assembly is part of the front wiring harness. Unless there is another connecter from the cooling fan to the front harness I don't know about.

 

I have an extra fan relay harness if it helps. Shoot me a pm.