Intermittent trim/tilt issues Johnson 70hp -89

[Gabbu]

I have a 1989 70hp johnson VRO with intermittent trim/tilt issues. It sometimes stops working, but the next day it works just fine. Or it starts working after I've trailed the boat home which takes about 10 minutes.
I have performed a relay ohmmeter test on both relays. Test results are good. I have also connected a 12v battery directly to the trim/tilt motor and it works fine both ways.
Something I've noticed is that there is some brownish gunk (like a gel) gathered on the relay connectors.Probably caused by the heat from the engine. I usually clean them off. I'm suspecting bad wires and or connections.
Is somebody familiar with this problem? or have any suggestion where I should be looking next.
Help is much appreciated.

 

[Crosbyman]

relay contacts could be dirty or tilt rim switch contacts could also be dirty

tilt motor may be intermittent

control wires could be broken … turn the engine either way while pushing the tilt button to see if the tilt comes alive

if it does look for broken wire in the harness

 

[TMW123]

Checking relays for continuity wont do much if the problem is intermittent. Mine have the brown crap on them too, I assumed it was dielectric grease.