Dealer-installed A/C unit wiring question.

[jmbass98]

'66 Charger has a dealer-installed Northlander A/C head unit under the dash. It's all hooked up except for the red power wire. Previous owner said it had an inline fuse before it was clipped. For easiest install, where should I run this power wire to and what amp fuse should I use? 16ga wire.

 

[493 Mike]

I would tap the output wire for the heater at the fuse box.
Mike

 

[jmbass98]

Ok. I would still need an inline fuse then, prob 20 amp?

 

[493 Mike]

Ok. I would still need an inline fuse then, prob 20 amp?

What size fuse is in there now? By tapping the heater fuse output wiring you can use the existing heater fuse. I can't imagine you will run the heater and A/C simultaneously.
Mike

 

[jmbass98]

No fuse in there now but the previous owner said there was an inline fuse so I wasn't sure how to tell what amp it required.

 

[493 Mike]

No fuse in there now but the previous owner said there was an inline fuse so I wasn't sure how to tell what amp it required.

The ampere requirements of the evaporator fan determines total draw unless the compressor clutch feeds from the same source. I think you will be fine with a 20 amp fuse.
Mike

 

[jmbass98]

Last question, you said "I can't imagine you will run the heater and A/C simultaneously". Would doing so with the A/C tapped into the heater fuse cause an issue? Trying to avoid a fire lol.