Testing relay boards...., Can you bench test a 914 relay board....??? Options

[second wind]

Hello out there....my car has been dying after getting a good warm up but starts the next morning. The tell tale symptom is that the fuel pump does not run when the stall occurs and even after hours of cooling off it still does not start...but it does in the morning....???
So talk on the street is the relay board is too old to work properly.....the description of 914 LTD's improved and rebuilt relay boards matches the symptoms of my car perfectly so as soon as I scrap up the money I will buy one.....meanwhile I have two spare relay boards and one looks really good. Is there a way to bench test the relay board before I swap the boards ?? These cars sure keep you on your toes and a relay board with fresh soldered connections sure sounds appealing so Brad is holding one for me. So back to the swap out....I hate to go to the effort just to install another faulty board. Look forward and appreciate any and all comments and help....thank you very much!!!!
gg

[lesorubcheek]

Tracking down intermittent electrical problems ain't fun. When we were working on mcm minesweepers, the rule was to suspect cables first, components second. Really it pertains to any junction where an electrical connection relies on physical contact, and those swaged pins in the circuit board fit this scenario. Not saying that's for sure where your problem lies, but it's a possibility. Another rule says to try and pick low hanging fruit first, so easy things that are external don't hurt to eliminate before digging into a complex can of worms.

There's a great reference on Mr. Bowlby's site (absolutely incredible person sharing a wealth of knowledge) dealing with fuel pump troubleshooting. Here's the link. https://bowlsby.net/914/Classic/TechNotebook.htm
There's "Fuel Pump Circuit Troubleshooting Flow Charts" and "Fuel Pump Circuit Troubleshooting D-Jet only". Each is a pdf. Maybe these can give some suggestions as to a path for finding where the problem lies.

Dan