Engine harnasses 89 and 90

[Tomahawked]

Does the actual harnass to engine unplug seperately from main loom on firewall in an 89? There is a big connector that appears to go where an engine harnass would tie into. I don't have an engine or wires to it in this particular truck and don't have another to compare to. A 90 model donor I just picked up has the engine harnass in one piece all plumbed in to the main loom. My plans were to stab a motor in, but now I will need to get an engine harnass or swap all of the 90 loom in.

[JeepcoMJ]

so long as the trucks have the same engine option (or had in this case), you won't have any issues between 89 and 90 models. of course, there are some who have plug-and-played a 4.0 engine harness to a 2.5 interior harness from the same year vehicle

[Eagle]

Early 89's have the big C101 connector on the firewall in the engine compartment, directly ahead of the driver. This was eliminated in mid-89 and is not present in the 90 models. I think that's what the original question relates to. Get an engine harness from an '88 or early '89 and you should be good to go.

[JeepcoMJ]

Early 89's have the big C101 connector on the firewall in the engine compartment, directly ahead of the driver. This was eliminated in mid-89 and is not present in the 90 models. I think that's what the original question relates to.

 

ok. my understanding was bulkhead connector.

 

what's a C101 connector?