Electronic Helms manual?
 

Anyone know if there's a good place to get a PDF or similar of the Helms manual for the 1989 CRX DX? I see many on eBay but don't know which kind is which.

Do you want specifically a Helm brand manual, or just any reference?

Autozone.com has online service manuals that are similar to a Chilton or Haynes book.

Your local library may give you online access to the EBSCO Auto Repair Reference Center.

There's also just borrowing the book from the library.

Those $10 nameless CDs on eBay seem fishy to me and I don't want to gamble $10 to find out.

Napa's website gives you access to Mitchell On Demand 5, which is what most all repair shops use when working on customer cars.

It doesn't give you EVERYTHING.... but if you know a mechanic, he can probably get you access to a hard copy that you will want to download onto your computer. Friend of mine has the entire Mitchell program on his computer for every car made from about 1985 to 2005

Try here

https://www.hondahookup.com/manuals/

or here

https://www.spoonhonda.com/SearchResults.asp?Cat=119