85 rx-7 trouble cranking
 

Hey Guys,

I've been using this site for random searches for a bit but decided to finally get in on the action for real. Definitely a beginner. Been working on getting my dad's 85 FB back on the road after 17 yrs of sitting in a garage for about a year now. We're really close to some true road tests. here is the current situation:

A month or so ago we were flushing the coolant and, after having no previous trouble cranking her up, she just wouldn't crank anymore. Happened right after we drained the old coolant. Yesterday we were back at it again and after a lot of testing and various temporary jumper wire concoctions, we managed to track the problem down to the section of wire coming from the ignition to the solenoid on the starter. I attached a word doc with pictures of the electrical schematic. Next time we get at it we're hoping to replace that section of wiring and give it another go. I guess I have a few questions to see if anyone else has any insight here.

First, there should be a fusible link behind the ignition: Tracing wires, the only thing that makes sense is a brown plastic connector box, but it doesn't look the way I expected a fusible link to look. Anybody got a picture of where exactly this link is supposed to be? And if I need to replace the fusible link what exactly should I use there?

Second any specific insight into what gauge wire would be the most appropriate to trade out?

The wire in question is the BY that goes from X-10 to X-12. (funny thing is the actual wire swapped from BY to BW after the previously mentioned brown connector)

Once again, I am definitely a beginner so please forgive any stupid ignorant things I say or incorrect terms I use. Here to learn.

The 1985 also has a fusible link on the starter trigger wire at the starter. many times, folks remove this one and just hardwire it. Not saying that's the right thing to do.

Factory wiring diagrams can be found here. Foxed.ca

Thanks. That one appears to be doing its job fine, the problem is definitely further up the line closer to the ignition. But I will certainly keep that in mind.

https://www.rx7club.com/1st-gen-gene...-link-1141600/

If anybody winds up here as the result of a search. Here is a link to a separate forum where we got this issue resolved