delay accessory for cold starts

I have just ordered the 528T on ebay, should get it in a week or so. I will pick up the diode.  2 more questions: do i have to fuse the 12volt red wire? fuse size? And if you would kindly look at the picture in the link above and advise if it makes a difference which side i tap the 528 on the ACC1 line.

That drawing doesn't really tell you anything! Look at this:- acc_delay.bmp

Now here is a question Howie. Why cut the factory wire? If it is starting fine with the key then why not just connect the acc from the r/s to the 528T, then the 528T to the accessory wire in the car???Kenny

Owner / Technician

KKD Garage LLC

Albany, NY 12205

As per the wiring info on this site, i connected the ACC1 at the plug in the left kick panel.  I am not sure if i should connect the 528T closer to the plug in the panel, or on the other side.  No idea where the switch is.

Of course, if i could just tap into the R/S ACC1 line as Kenny has mentioned, none of the above matters, and that would be nice and easy.

You're absolutely right, that's the problem with thinking up stuff on the fly 6EF_acc_delay.bmp

Gents, i had a couple of failures this weekend even with the A/C off.  I currently have it on Tach, and it doesn't appear to crank long enough, it tries 3x, and fails, then sends a low tach signal error message.  If i get in the van, and use the key, i notice it requires a little long holding then what the R/S tries.  With the key, never had a failure. 

I am thinking i have two options:  either increase the tach mode starter release with the bitwriter, if i set it to max of 20, will that help me with the crank time?  Or i just go to voltage sense and increase the crank time for more reliability? 

try voltage sense for now and increase crank time. see if that helps.Ted

2nd Year Tier 1 Medical School

Still installing as a hobby...pays for groceries

Compustar Expert

Another trick I've learned is to bring the RPM's up slightly before programming tach. Depending on the air temperature at the time of the install, the engine may not have required a cold start RPM increase... therefore the r/s is sensing the RPM and cutting off before the vehicle can run itself. Don't bring it up too high otherwise you'll have the exact opposite in the summer, but just a few hundred RPMS should do it. I usually program it around 1200rpm depending on the vehicle.Kenny

Owner / Technician

KKD Garage LLC

Albany, NY 12205

the manual states to program when the vehicle reaches the lowest possible revs, but i always program on a cold engine. yet to have a problematic vehicle.Ted

2nd Year Tier 1 Medical School

Still installing as a hobby...pays for groceries

Compustar Expert

Exactly. On a cold engine, the rpm's are usually higher. However if the install was done in a heated garage or with a warm engine, you won't have that initial increased RPM and that can cause issues.Kenny

Owner / Technician

KKD Garage LLC

Albany, NY 12205