Preheat K18

[mrkoopa]

Hi y'all,
Coming off of a j6 or p6?, don't know, the inside part of the big harness, replacement out of a parts 813a, into my 803a. So far successful. We have engine running and making power.

I have yet to connect my K18 signal/low current side. I got away with not removing the larger gauge cable. Any way my question is my K18 appears different then what is in the TM. Questioning where on my somewhat rounder, with terminals on top K18, that my 139B and 100M wires go. As far as I can tell the device is unlabeled and appears different then what was in my 813a. The previous cables were chewed right down to the connector so no help there.

 

[Guyfang]

Post a picture of it.

 

[mrkoopa]

Sure thing.

 

[kloppk]

Looks like K18 a MEP-802A K18. It's just a 24 volt Starter Solenoid (Relay)

 

[mrkoopa]

Interesting, the title of your image appears to be an 802 related TM. I must have a 802 relay in my 803? is that ok as far as current draw with the extra heaters. An ebay listing for the SAS-4410 states its good to 100amps.

Here is the 803 part in the TM.

 

[kloppk]

I updated my post.
The K18 for the 803 is rated at 100 amps.
The relay for the 802 is rated at 40 amps.

I see the relay in your pic is a SAS-4410. It's rated at 100 amps so it should be fine to use.

 

[mrkoopa]

Just to take this full circle, as even the 802 TM has to add some ambiguity by showing a round part head on. Do these post labels look correct to you? like I am looking at the back of the module and the TM is looking at the front head on.

Thanks again for all yalls help.

 

[kloppk]

Correct.
1 & 2 are for the coil in the relay
3 & 4 are for the switched high current

 

[mrkoopa]

And looking at the datasheet for the SAS-4410 it doesn't appear that there is a required polarity for the coil, so it doesnt matter where the 139B(K18-1) and 100M(K18-2) wires go as long as they're on posts 1 and 2, the coil will energize and the relay will close.

 

[Guyfang]

The same for the load wires. No matter how you hook it up. it will work. Before you assume its bad, test it.