I bought a 93 Accord and the cooling fan has been hard wired to the battery so I have to plug it in and unplug it every time I use the car. I want to rewire it so it works like it did when it was new but I can’t find where the wires were cut when they hard wired it. Any body have any tips for me?

 

Whoever hardwired it was too lazy to fix whatever was broken in the first place so you're likely gonna be chasing another problem once you wire it correctly. Having it wired directly to the battery, especially if it's unfused, is very unsafe and you should fix the issue as soon as possible.

You should google search for a service manual for your vehicle. They are available and will help you with wiring diagrams.

General info to get you started: It's a simple system, there's a relay in the fuse box that is controlled by a thermoswitch on the thermostat housing and/or front water neck. Thermoswitch sees the car is at a certain temperature, closes circuit and that causes the relay to click on which then sends power to the fan. There should be a 2 pin plug on either side of bulkhead near the radiator that connect to the fans. Blue wire and a black wire on each if memory serves. Blue is your positive and black is your ground. With the car up to temperature you should be getting at least 12v at the blue wire. Verify with a multimeter. If not there is a problem with the relay, thermoswitch, or wiring somewhere. The condenser fan and cooling fans will have their own plug respectively. I would start there and work backwards. Wiring diagrams from the factory service manual will be very useful.

If all else fails and you can't fix what you have, there are a million ways to wire one up. You can use a 30/40 amp relay and wire it to a switch or there are aftermarket kits available with a thermoswitch that will control operation like stock. I have used said kits when adding electric fans to old muscle cars and they work great.

 

Thanks for the reply. I’ll head out there and see what I can do. I’ll take a few pictures and post them if I can’t figure it out.

 

So I tried to figure out where the main issue was before someone hard wired it to the battery. I tested the cooling fan relay and checked all the fuses. They were all good. Then I saw online somewhere that if you use a jumper and jump the pins on the temp sensor switch A then the cooling fan should turn on. But since mine is only wired up to the battery that test wouldn’t of worked for me. I did it anyways and when I jumped switch A the condenser fan turned on. To my understanding the condenser fan should only come on if the ac is running. Which mine was not. The car was off with the key turned to the on position. Is it normal for that to happen or am I looking at more issues?

 

That's normal. One of the thermoswitches has a higher range than the other. I believe it acts as an override in the event that the vehicle is overheating to turn the condenser fan on.

That test would have worked for you on the cooling fan as well. Except when jumping the pins, instead of looking for the fan to turn on, you would have been looking for 12v on the original fan connector(blue wire).