Rostra cruise control problems and troubleshooting

[shaggs147]

P.S ...... what's the pink hairband for on Sailor Chic's Rostra install ...... Is that another mod that I don't know about? 

[VirginiaJim]

Possibly.  Why don't you give that one a try?

[sailor_chic]

Thanks for the kind words about my install.  I'm certainly glad that I have set a standard. 
Please don't over think the hairband, it's exactly what it's intended for, my hair.  It just happened to be on the grip when I took the picture.

[Ginger Ninja]

Pulling up an old thread because it best describes the problem i am currently having.
Cruise worked fine for a year then one trip it stopped working, it will not engage. I've checked cleaned and redone all the grounds, swapped out brake relay with a new one, switched controllers, got the with the engage light( still need to wire in the relay for it). I've opened the control box and tested that all the inputs are correct.

doing the ground test and mentioned. tested with positive on purple wire side of the relay and ground on used ground got 12.4v with brakes engaged.  brakes disengaged, positive on battery and ground on purple wire side i get 12.6v
 
red; 12+v when switched on
purple; grounded then 12+v when brakes pulled
black; ground
yellow;12+v switched w/ resume
brown; 12+v power
gray; vvs 5v pulse
dark green; 12+v switched w/ set
blue; not used
light green; clutch switch
orange; not used

any help would be great!! Im on day 5 of trying to get this figured out.

[Freddy]

I've opened the control box and tested that all the inputs are correct.  Does that mean you checked the red LED under the rubber cap as per Rostra book?

If the control pad hasn't been protected from rain that can kill it.

[Ginger Ninja]

Red led comes on when the unit is powered on. Control pad is new, replaced the first one as an attempt to fix my issue.

[Freddy]

Does the red LED behave exactly as described in the t/shooting procedure?  Sorry - can't be of more help.  Perhaps the unit has failed, but I've not heard of such before.

[Ginger Ninja]

System will not enter diagnostic mode. Red light comes on with power and does not change with the pressing of set or resume button. Going to wire in the engaged light relay tonight and triple check that the mechanical connections are all still good.

[Freddy]

System will not enter diagnostic mode.  That certainly makes it difficult.  Good luck and report back with findings.