Need help re-installing BN4 heater

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AdamH
Posts: 32
Joined: Wed Mar 15, 2017 6:38 pm

Need help re-installing BN4 heater

Post by AdamH » Sat Aug 19, 2017 12:33 pm

Hello all, maybe someone can help me with my heater re-install?
I have a 710k that came with a BN4, but it wasn't installed. It definitely came from this Pinz as the wires are cut off in the same fashion.
Luckily they left some ends, so I can match the colors when i put it back in. However there are a couple that are uncertain- there are 2 brown wires on the heater, and there are 2 brown wires in the Pinz- but I'm unsure which ones go where. On the heater one of the brown wires is with the other on the top harness, the other one comes out by the air inlet.
Also, in the main harness of fetch top there is one thicker black wire with a fuse that doesn't seem to correspond to anything in the Pinz. usually thicker black wires are ground, but I don't want to make any assumptions on this one- plus ground wires don't typically have inline fuses.

Any help would be fantastic!
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boeing7873
Argentina
Posts: 136
Joined: Sun Dec 21, 2008 10:50 am
Location: Atlanta
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Re: Need help re-installing BN4 heater

Post by boeing7873 » Mon Dec 18, 2017 4:47 pm

Did you figure out the wiring???
Sorry I just looked at your post...
Jerome
CRJ Driver

AdamH
Posts: 32
Joined: Wed Mar 15, 2017 6:38 pm

Re: Need help re-installing BN4 heater

Post by AdamH » Mon Dec 18, 2017 6:52 pm

Yeah, I did finally get the wiring figured out, thanks for checking in!
Right now its running, but I'm getting a lot of smog out the tailpipe and can't figure out why.
Any ideas on that?

boeing7873
Argentina
Posts: 136
Joined: Sun Dec 21, 2008 10:50 am
Location: Atlanta
Contact:

Re: Need help re-installing BN4 heater

Post by boeing7873 » Mon Jun 11, 2018 12:11 am

Adam,
Just did a rebuild of my BN4, removed about a pound of carbon deposits from the burner can. Quite a job to get to it. Now I am having the same question you had... the brown wires!!! I can't recall which one goes to the pump!... No worries, I will figure it out, there are diagrams online!
Jerome
CRJ Driver

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